(skiplist) Move to a separate directory instead of in the btree module

This is needed to access io_uring via docker.

ROADMAP.md

@@ -48,10 +48,6 @@ filter for any API consumer.
 
 I've talked to the stract dev and he does not think it's a good idea to mimic their optics language, which is quite ad-hoc, but instead to work together to find some new common description language for this. 
 
-## Show favicons next to search results
-
-This is expected from search engines.  Basic proof of concept sketch of fetching this data has been done, but the feature is some way from being reality. 
-
 ## Specialized crawler for github
 
 One of the search engine's biggest limitations right now is that it does not index github at all.   A specialized crawler that fetches at least the readme.md would go a long way toward providing search capabilities in this domain.
@@ -66,6 +62,10 @@ The documents database probably should have some sort of flag indicating it's a
 PDF parsing is known to be a bit of a security liability so some thought needs to be put in
 that direction as well.
 
+## Show favicons next to search results (COMPLETED 2025-03)
+
+This is expected from search engines.  Basic proof of concept sketch of fetching this data has been done, but the feature is some way from being reality.
+
 ## Web Design Overhaul (COMPLETED 2025-01)
 
 The design is kinda clunky and hard to maintain, and needlessly outdated-looking.  

code/common/config/java/nu/marginalia/nodecfg/NodeConfigurationService.java

@@ -45,7 +45,7 @@ public class NodeConfigurationService {
     public List<NodeConfiguration> getAll() {
         try (var conn = dataSource.getConnection();
              var qs = conn.prepareStatement("""
-                     SELECT ID, DESCRIPTION, ACCEPT_QUERIES, AUTO_CLEAN, PRECESSION, KEEP_WARCS, NODE_PROFILE, DISABLED
+                     SELECT ID, DESCRIPTION, ACCEPT_QUERIES, AUTO_CLEAN, PRECESSION, AUTO_ASSIGN_DOMAINS, KEEP_WARCS, NODE_PROFILE, DISABLED
                      FROM NODE_CONFIGURATION
                      """)) {
             var rs = qs.executeQuery();
@@ -59,6 +59,7 @@ public class NodeConfigurationService {
                         rs.getBoolean("ACCEPT_QUERIES"),
                         rs.getBoolean("AUTO_CLEAN"),
                         rs.getBoolean("PRECESSION"),
+                        rs.getBoolean("AUTO_ASSIGN_DOMAINS"),
                         rs.getBoolean("KEEP_WARCS"),
                         NodeProfile.valueOf(rs.getString("NODE_PROFILE")),
                         rs.getBoolean("DISABLED")
@@ -75,7 +76,7 @@ public class NodeConfigurationService {
     public NodeConfiguration get(int nodeId) throws SQLException {
         try (var conn = dataSource.getConnection();
              var qs = conn.prepareStatement("""
-                     SELECT ID, DESCRIPTION, ACCEPT_QUERIES, AUTO_CLEAN, PRECESSION, KEEP_WARCS, NODE_PROFILE, DISABLED
+                     SELECT ID, DESCRIPTION, ACCEPT_QUERIES, AUTO_CLEAN, PRECESSION, AUTO_ASSIGN_DOMAINS, KEEP_WARCS, NODE_PROFILE, DISABLED
                      FROM NODE_CONFIGURATION
                      WHERE ID=?
                      """)) {
@@ -88,6 +89,7 @@ public class NodeConfigurationService {
                         rs.getBoolean("ACCEPT_QUERIES"),
                         rs.getBoolean("AUTO_CLEAN"),
                         rs.getBoolean("PRECESSION"),
+                        rs.getBoolean("AUTO_ASSIGN_DOMAINS"),
                         rs.getBoolean("KEEP_WARCS"),
                         NodeProfile.valueOf(rs.getString("NODE_PROFILE")),
                         rs.getBoolean("DISABLED")
@@ -102,7 +104,7 @@ public class NodeConfigurationService {
         try (var conn = dataSource.getConnection();
              var us = conn.prepareStatement("""
                      UPDATE NODE_CONFIGURATION
-                     SET DESCRIPTION=?, ACCEPT_QUERIES=?,  AUTO_CLEAN=?, PRECESSION=?, KEEP_WARCS=?, DISABLED=?, NODE_PROFILE=?
+                     SET DESCRIPTION=?, ACCEPT_QUERIES=?,  AUTO_CLEAN=?, PRECESSION=?, AUTO_ASSIGN_DOMAINS=?, KEEP_WARCS=?, DISABLED=?, NODE_PROFILE=?
                      WHERE ID=?
                      """))
         {
@@ -110,10 +112,11 @@ public class NodeConfigurationService {
             us.setBoolean(2, config.acceptQueries());
             us.setBoolean(3, config.autoClean());
             us.setBoolean(4, config.includeInPrecession());
-            us.setBoolean(5, config.keepWarcs());
-            us.setBoolean(6, config.disabled());
-            us.setString(7, config.profile().name());
-            us.setInt(8, config.node());
+            us.setBoolean(5, config.autoAssignDomains());
+            us.setBoolean(6, config.keepWarcs());
+            us.setBoolean(7, config.disabled());
+            us.setString(8, config.profile().name());
+            us.setInt(9, config.node());
 
             if (us.executeUpdate() <= 0)
                 throw new IllegalStateException("Failed to update configuration");

code/common/config/java/nu/marginalia/nodecfg/model/NodeConfiguration.java

@@ -5,6 +5,7 @@ public record NodeConfiguration(int node,
                                 boolean acceptQueries,
                                 boolean autoClean,
                                 boolean includeInPrecession,
+                                boolean autoAssignDomains,
                                 boolean keepWarcs,
                                 NodeProfile profile,
                                 boolean disabled

code/common/config/java/nu/marginalia/nodecfg/model/NodeProfile.java

@@ -20,9 +20,7 @@ public enum NodeProfile {
     }
 
     public boolean permitBatchCrawl() {
-        return isBatchCrawl() ||isMixed();
-    }
-    public boolean permitSideload() {
-        return isMixed() || isSideload();
+        return isBatchCrawl() || isMixed();
     }
+    public boolean permitSideload() {  return isSideload() || isMixed(); }
 }

code/common/config/test/nu/marginalia/nodecfg/NodeConfigurationServiceTest.java

@@ -2,6 +2,7 @@ package nu.marginalia.nodecfg;
 
 import com.zaxxer.hikari.HikariConfig;
 import com.zaxxer.hikari.HikariDataSource;
+import nu.marginalia.nodecfg.model.NodeConfiguration;
 import nu.marginalia.nodecfg.model.NodeProfile;
 import nu.marginalia.test.TestMigrationLoader;
 import org.junit.jupiter.api.BeforeAll;
@@ -62,6 +63,63 @@ public class NodeConfigurationServiceTest {
         assertEquals(2, list.size());
         assertEquals(a, list.get(0));
         assertEquals(b, list.get(1));
+    }
 
+
+    // Test all the fields that are only exposed via save()
+    @Test
+    public void testSaveChanges() throws SQLException {
+        var original = nodeConfigurationService.create(1, "Test", false, false, NodeProfile.MIXED);
+
+        assertEquals(1, original.node());
+        assertEquals("Test", original.description());
+        assertFalse(original.acceptQueries());
+
+        var precession = new NodeConfiguration(
+                original.node(),
+                "Foo",
+                true,
+                original.autoClean(),
+                original.includeInPrecession(),
+                !original.autoAssignDomains(),
+                original.keepWarcs(),
+                original.profile(),
+                original.disabled()
+        );
+
+        nodeConfigurationService.save(precession);
+        precession = nodeConfigurationService.get(original.node());
+        assertNotEquals(original.autoAssignDomains(), precession.autoAssignDomains());
+
+        var autoClean = new NodeConfiguration(
+                original.node(),
+                "Foo",
+                true,
+                !original.autoClean(),
+                original.includeInPrecession(),
+                original.autoAssignDomains(),
+                original.keepWarcs(),
+                original.profile(),
+                original.disabled()
+        );
+
+        nodeConfigurationService.save(autoClean);
+        autoClean = nodeConfigurationService.get(original.node());
+        assertNotEquals(original.autoClean(), autoClean.autoClean());
+
+        var disabled = new NodeConfiguration(
+                original.node(),
+                "Foo",
+                true,
+                autoClean.autoClean(),
+                autoClean.includeInPrecession(),
+                autoClean.autoAssignDomains(),
+                autoClean.keepWarcs(),
+                autoClean.profile(),
+                !autoClean.disabled()
+        );
+        nodeConfigurationService.save(disabled);
+        disabled = nodeConfigurationService.get(original.node());
+        assertNotEquals(autoClean.disabled(), disabled.disabled());
     }
 }

code/common/db/resources/db/migration/V25_06_0_005__ndp__new_domains_queue.sql

@@ -0,0 +1,12 @@
+-- Table holding domains to be processed by the NDP in order to figure out whether to add them to
+-- be crawled.
+
+CREATE TABLE IF NOT EXISTS NDP_NEW_DOMAINS(
+    DOMAIN_ID INT NOT NULL PRIMARY KEY,
+    STATE ENUM ('NEW', 'ACCEPTED', 'REJECTED') NOT NULL DEFAULT 'NEW',
+    PRIORITY INT NOT NULL DEFAULT 0,
+    TS_CHANGE TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    CHECK_COUNT INT NOT NULL DEFAULT 0
+);
+
+CREATE INDEX IF NOT EXISTS NDP_NEW_DOMAINS__STATE_PRIORITY ON NDP_NEW_DOMAINS (STATE, PRIORITY DESC);

code/common/db/resources/db/migration/V25_06_0_006__ndp__node_configuration.sql

@@ -0,0 +1,3 @@
+-- Migration script to add AUTO_ASSIGN_DOMAINS column to NODE_CONFIGURATION table
+
+ALTER TABLE NODE_CONFIGURATION ADD COLUMN AUTO_ASSIGN_DOMAINS BOOLEAN NOT NULL DEFAULT TRUE;

code/common/model/java/nu/marginalia/model/crawl/HtmlFeature.java

@@ -5,13 +5,15 @@ import java.util.Collection;
 public enum HtmlFeature {
     // Note, the first 32 of these features are bit encoded in the database
     // so be sure to keep anything that's potentially important toward the top
-    // of the list
+    // of the list; but adding new values will shift the encoded values and break
+    // binary compatibility!  Scroll down for a marker where you should add new values
+    // if they need to be accessible from IndexResultScoreCalculator!
 
     MEDIA( "special:media"),
     JS("special:scripts"),
     AFFILIATE_LINK( "special:affiliate"),
     TRACKING("special:tracking"),
-    TRACKING_ADTECH("special:ads"), // We'll call this ads for now
+    TRACKING_ADTECH("special:adtech"),
 
     KEBAB_CASE_URL("special:kcurl"), // https://www.example.com/urls-that-look-like-this/
     LONG_URL("special:longurl"),
@@ -30,6 +32,15 @@ public enum HtmlFeature {
 
     PDF("format:pdf"),
 
+    POPOVER("special:popover"),
+    CONSENT("special:consent"),
+    SHORT_DOCUMENT("special:shorty"),
+    THIRD_PARTY_REQUESTS("special:3pr"),
+
+    // Here!  It is generally safe to add additional values here without
+    // disrupting the encoded values used by the DocumentValuator
+    // class in the index!
+
     /** For fingerprinting and ranking */
     OPENGRAPH("special:opengraph"),
     OPENGRAPH_IMAGE("special:opengraph:image"),
@@ -67,6 +78,7 @@ public enum HtmlFeature {
 
     S3_FEATURE("special:s3"),
 
+    MISSING_DOM_SAMPLE("special:nosample"),
     UNKNOWN("special:uncategorized");
 
 

code/common/service/java/nu/marginalia/service/ServiceId.java

@@ -7,7 +7,6 @@ public enum ServiceId {
     Search("search-service"),
     Index("index-service"),
     Query("query-service"),
-    Executor("executor-service"),
 
     Control("control-service"),
 

code/common/service/java/nu/marginalia/service/client/GrpcChannelPoolFactory.java

@@ -13,6 +13,7 @@ import nu.marginalia.service.discovery.property.ServicePartition;
 import nu.marginalia.util.NamedExecutorFactory;
 
 import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
 import java.util.function.Function;
 
 @Singleton
@@ -20,10 +21,15 @@ public class GrpcChannelPoolFactory {
 
     private final NodeConfigurationWatcher nodeConfigurationWatcher;
     private final ServiceRegistryIf serviceRegistryIf;
-    private static final Executor executor = NamedExecutorFactory.createFixed("gRPC-Channel-Pool",
-            Math.clamp(Runtime.getRuntime().availableProcessors() / 2, 2, 32));
-    private static final Executor offloadExecutor = NamedExecutorFactory.createFixed("gRPC-Offload-Pool",
-            Math.clamp(Runtime.getRuntime().availableProcessors() / 2, 2, 32));
+
+    private static final boolean useLoom = Boolean.getBoolean("system.experimentalUseLoom");
+
+    private static final Executor executor = useLoom
+            ? Executors.newVirtualThreadPerTaskExecutor()
+            : NamedExecutorFactory.createFixed("gRPC-Channel-Pool", Math.clamp(Runtime.getRuntime().availableProcessors() / 2, 2, 32));
+    private static final Executor offloadExecutor =  useLoom
+            ? Executors.newVirtualThreadPerTaskExecutor()
+            : NamedExecutorFactory.createFixed("gRPC-Offload-Pool", Math.clamp(Runtime.getRuntime().availableProcessors() / 2, 2, 32));
 
     @Inject
     public GrpcChannelPoolFactory(NodeConfigurationWatcher nodeConfigurationWatcher,

code/common/service/java/nu/marginalia/service/client/GrpcSingleNodeChannelPool.java

@@ -2,6 +2,7 @@ package nu.marginalia.service.client;
 
 import com.google.common.collect.Sets;
 import io.grpc.ManagedChannel;
+import io.grpc.StatusRuntimeException;
 import nu.marginalia.service.discovery.ServiceRegistryIf;
 import nu.marginalia.service.discovery.monitor.ServiceChangeMonitor;
 import nu.marginalia.service.discovery.property.PartitionTraits;
@@ -206,6 +207,11 @@ public class GrpcSingleNodeChannelPool<STUB> extends ServiceChangeMonitor {
         }
 
         for (var e : exceptions) {
+            if (e instanceof StatusRuntimeException se) {
+                throw se; // Re-throw SRE as-is
+            }
+
+            // If there are other exceptions, log them
             logger.error(grpcMarker, "Failed to call service {}", serviceKey, e);
         }
 

code/common/service/java/nu/marginalia/service/server/GrpcServer.java

@@ -1,9 +1,9 @@
 package nu.marginalia.service.server;
 
 import io.grpc.Server;
-import io.grpc.netty.shaded.io.grpc.netty.NettyServerBuilder;
-import io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoopGroup;
-import io.grpc.netty.shaded.io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.grpc.netty.NettyServerBuilder;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
 import nu.marginalia.service.discovery.ServiceRegistryIf;
 import nu.marginalia.service.discovery.property.ServiceKey;
 import nu.marginalia.service.discovery.property.ServicePartition;
@@ -13,9 +13,14 @@ import nu.marginalia.util.NamedExecutorFactory;
 import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.util.List;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 public class GrpcServer {
     private final Server server;
+
+    private static final boolean useLoom = Boolean.getBoolean("system.experimentalUseLoom");
+
     public GrpcServer(ServiceConfiguration config,
                       ServiceRegistryIf serviceRegistry,
                       ServicePartition partition,
@@ -26,13 +31,19 @@ public class GrpcServer {
         int nThreads = Math.clamp(Runtime.getRuntime().availableProcessors() / 2, 2, 16);
 
         // Start the gRPC server
+
+        ExecutorService workExecutor = useLoom ?
+                Executors.newVirtualThreadPerTaskExecutor() :
+                NamedExecutorFactory.createFixed("nettyExecutor", nThreads);
+
         var grpcServerBuilder = NettyServerBuilder.forAddress(new InetSocketAddress(config.bindAddress(), port))
-                .executor(NamedExecutorFactory.createFixed("nettyExecutor", nThreads))
+                .executor(workExecutor)
                 .workerEventLoopGroup(new NioEventLoopGroup(nThreads, NamedExecutorFactory.createFixed("Worker-ELG", nThreads)))
                 .bossEventLoopGroup(new NioEventLoopGroup(nThreads, NamedExecutorFactory.createFixed("Boss-ELG", nThreads)))
                 .channelType(NioServerSocketChannel.class);
 
         for (var grpcService : grpcServices) {
+
             if (!grpcService.shouldRegisterService()) {
                 continue;
             }

code/common/service/java/nu/marginalia/service/server/JoobyService.java

@@ -125,8 +125,7 @@ public class JoobyService {
         // Set a cap on the number of worker threads, as Jooby's default value does not seem to consider
         // multi-tenant servers with high thread counts, and spins up an exorbitant number of threads in that
         // scenario
-        options.setWorkerThreads(Math.min(128, options.getWorkerThreads()));
-
+        options.setWorkerThreads(Math.min(16, options.getWorkerThreads()));
 
         jooby.setServerOptions(options);
 

code/common/service/resources/log4j2-json.xml

@@ -7,6 +7,7 @@
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CONVERTER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
         </Console>
         <Console name="ProcessConsole" target="SYSTEM_OUT">
@@ -23,6 +24,7 @@
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="PROCESS" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CONVERTER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
             <SizeBasedTriggeringPolicy size="10MB" />
         </RollingFile>
@@ -36,6 +38,16 @@
                 <MarkerFilter marker="CRAWLER" onMatch="ALLOW" onMismatch="DENY" />
             </Filters>
         </RollingFile>
+        <RollingFile name="LogToFile" fileName="${env:WMSA_LOG_DIR:-/var/log/wmsa}/converter-audit-${env:WMSA_SERVICE_NODE:-0}.log" filePattern="/var/log/wmsa/converter-audit-${env:WMSA_SERVICE_NODE:-0}-log-%d{MM-dd-yy-HH-mm-ss}-%i.log.gz"
+                     ignoreExceptions="false">
+            <PatternLayout>
+                <Pattern>%d{yyyy-MM-dd HH:mm:ss,SSS}: %msg{nolookups}%n</Pattern>
+            </PatternLayout>
+            <SizeBasedTriggeringPolicy size="100MB" />
+            <Filters>
+                <MarkerFilter marker="CONVERTER" onMatch="ALLOW" onMismatch="DENY" />
+            </Filters>
+        </RollingFile>
     </Appenders>
     <Loggers>
         <Logger name="org.apache.zookeeper" level="WARN" />

code/common/service/resources/log4j2-prod.xml

@@ -8,6 +8,7 @@
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CONVERTER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
         </Console>
         <Console name="ConsoleWarn" target="SYSTEM_OUT">
@@ -18,6 +19,7 @@
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CONVERTER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
         </Console>
         <Console name="ConsoleError" target="SYSTEM_OUT">
@@ -28,6 +30,7 @@
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CONVERTER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
         </Console>
         <Console name="ConsoleFatal" target="SYSTEM_OUT">
@@ -38,6 +41,7 @@
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CONVERTER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
         </Console>
         <Console name="ProcessConsole" target="SYSTEM_OUT">
@@ -57,6 +61,7 @@
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CONVERTER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
         </RollingFile>
         <RollingFile name="LogToFile" fileName="${env:WMSA_LOG_DIR:-/var/log/wmsa}/crawler-audit-${env:WMSA_SERVICE_NODE:-0}.log" filePattern="/var/log/wmsa/crawler-audit-${env:WMSA_SERVICE_NODE:-0}-log-%d{MM-dd-yy-HH-mm-ss}-%i.log.gz"
@@ -69,6 +74,16 @@
                 <MarkerFilter marker="CRAWLER" onMatch="ALLOW" onMismatch="DENY" />
             </Filters>
         </RollingFile>
+        <RollingFile name="LogToFile" fileName="${env:WMSA_LOG_DIR:-/var/log/wmsa}/converter-audit-${env:WMSA_SERVICE_NODE:-0}.log" filePattern="/var/log/wmsa/converter-audit-${env:WMSA_SERVICE_NODE:-0}-log-%d{MM-dd-yy-HH-mm-ss}-%i.log.gz"
+                     ignoreExceptions="false">
+            <PatternLayout>
+                <Pattern>%d{yyyy-MM-dd HH:mm:ss,SSS}: %msg{nolookups}%n</Pattern>
+            </PatternLayout>
+            <SizeBasedTriggeringPolicy size="100MB" />
+            <Filters>
+                <MarkerFilter marker="CONVERTER" onMatch="ALLOW" onMismatch="DENY" />
+            </Filters>
+        </RollingFile>
     </Appenders>
     <Loggers>
         <Logger name="org.apache.zookeeper" level="WARN" />

code/execution/api/java/nu/marginalia/executor/client/ExecutorClient.java

@@ -9,6 +9,7 @@ import nu.marginalia.executor.storage.FileStorageFile;
 import nu.marginalia.executor.upload.UploadDirContents;
 import nu.marginalia.executor.upload.UploadDirItem;
 import nu.marginalia.functions.execution.api.*;
+import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.service.ServiceId;
 import nu.marginalia.service.client.GrpcChannelPoolFactory;
 import nu.marginalia.service.client.GrpcMultiNodeChannelPool;
@@ -25,27 +26,37 @@ import java.net.URISyntaxException;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
+import java.time.Duration;
 import java.util.List;
 
 import static nu.marginalia.functions.execution.api.ExecutorApiGrpc.ExecutorApiBlockingStub;
 
 @Singleton
 public class ExecutorClient {
+    private final MqPersistence persistence;
     private final GrpcMultiNodeChannelPool<ExecutorApiBlockingStub> channelPool;
     private static final Logger logger = LoggerFactory.getLogger(ExecutorClient.class);
     private final ServiceRegistryIf registry;
 
     @Inject
     public ExecutorClient(ServiceRegistryIf registry,
+                          MqPersistence persistence,
                           GrpcChannelPoolFactory grpcChannelPoolFactory)
     {
         this.registry = registry;
+        this.persistence = persistence;
         this.channelPool = grpcChannelPoolFactory
                 .createMulti(
                         ServiceKey.forGrpcApi(ExecutorApiGrpc.class, ServicePartition.multi()),
                         ExecutorApiGrpc::newBlockingStub);
     }
 
+    private long createTrackingTokenMsg(String task, int node, Duration ttl) throws Exception {
+        return persistence.sendNewMessage("task-tracking[" + node + "]", "export-client", null, task, "", ttl);
+    }
+
+
+
     public void startFsm(int node, String actorName) {
         channelPool.call(ExecutorApiBlockingStub::startFsm)
                 .forNode(node)
@@ -96,6 +107,16 @@ public class ExecutorClient {
                         .build());
     }
 
+    public long updateNsfwFilters() throws Exception {
+        long msgId = createTrackingTokenMsg("nsfw-filters", 1, Duration.ofHours(6));
+
+        channelPool.call(ExecutorApiBlockingStub::updateNsfwFilters)
+                .forNode(1)
+                .run(RpcUpdateNsfwFilters.newBuilder().setMsgId(msgId).build());
+
+        return msgId;
+    }
+
     public ActorRunStates getActorStates(int node) {
         try {
             var rs = channelPool.call(ExecutorApiBlockingStub::getActorStates)
@@ -168,7 +189,7 @@ public class ExecutorClient {
         String uriPath = "/transfer/file/" + fileStorage.id();
         String uriQuery = "path=" + URLEncoder.encode(path, StandardCharsets.UTF_8);
 
-        var endpoints = registry.getEndpoints(ServiceKey.forRest(ServiceId.Executor, fileStorage.node()));
+        var endpoints = registry.getEndpoints(ServiceKey.forRest(ServiceId.Index, fileStorage.node()));
         if (endpoints.isEmpty()) {
             throw new RuntimeException("No endpoints for node " + fileStorage.node());
         }

code/execution/api/src/main/protobuf/executor-api.proto

@@ -18,6 +18,8 @@ service ExecutorApi {
   rpc calculateAdjacencies(Empty) returns (Empty) {}
   rpc restoreBackup(RpcFileStorageId) returns (Empty) {}
 
+  rpc updateNsfwFilters(RpcUpdateNsfwFilters) returns (Empty) {}
+
   rpc restartExecutorService(Empty) returns (Empty) {}
 }
 
@@ -66,6 +68,9 @@ message RpcExportRequest {
   int64 fileStorageId = 1;
   int64 msgId = 2;
 }
+message RpcUpdateNsfwFilters {
+  int64 msgId = 1;
+}
 message RpcFileStorageIdWithDomainName {
   int64 fileStorageId = 1;
   string targetDomainName = 2;

code/execution/build.gradle

@@ -20,6 +20,7 @@ dependencies {
     implementation project(':code:processes:live-crawling-process')
     implementation project(':code:processes:loading-process')
     implementation project(':code:processes:ping-process')
+    implementation project(':code:processes:new-domain-process')
     implementation project(':code:processes:converting-process')
     implementation project(':code:processes:index-constructor-process')
 
@@ -41,7 +42,6 @@ dependencies {
     implementation project(':code:functions:nsfw-domain-filter')
     implementation project(':code:execution:api')
 
-    implementation project(':code:processes:crawling-process:model')
     implementation project(':code:processes:crawling-process:model')
     implementation project(':code:processes:crawling-process:ft-link-parser')
     implementation project(':code:index:index-journal')

code/execution/java/nu/marginalia/actor/ActorApi.java

@@ -2,10 +2,11 @@ package nu.marginalia.actor;
 
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
-import nu.marginalia.functions.execution.api.*;
+import nu.marginalia.functions.execution.api.RpcFsmName;
+import nu.marginalia.functions.execution.api.RpcProcessId;
 import nu.marginalia.mq.MqMessageState;
 import nu.marginalia.mq.persistence.MqPersistence;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -14,18 +15,18 @@ import spark.Spark;
 @Singleton
 public class ActorApi {
     private final ExecutorActorControlService actors;
-    private final ProcessService processService;
+    private final ProcessSpawnerService processSpawnerService;
     private final MqPersistence mqPersistence;
     private final ServiceConfiguration serviceConfiguration;
     private final Logger logger = LoggerFactory.getLogger(getClass());
     @Inject
     public ActorApi(ExecutorActorControlService actors,
-                    ProcessService processService,
+                    ProcessSpawnerService processSpawnerService,
                     MqPersistence mqPersistence,
                     ServiceConfiguration serviceConfiguration)
     {
         this.actors = actors;
-        this.processService = processService;
+        this.processSpawnerService = processSpawnerService;
         this.mqPersistence = mqPersistence;
         this.serviceConfiguration = serviceConfiguration;
     }
@@ -43,7 +44,7 @@ public class ActorApi {
     }
 
     public Object stopProcess(RpcProcessId processId) {
-        ProcessService.ProcessId id = ProcessService.translateExternalIdBase(processId.getProcessId());
+        ProcessSpawnerService.ProcessId id = ProcessSpawnerService.translateExternalIdBase(processId.getProcessId());
 
         try {
             String inbox = id.name().toLowerCase() + ":" + serviceConfiguration.node();
@@ -60,7 +61,7 @@ public class ActorApi {
                 }
 
             }
-            processService.kill(id);
+            processSpawnerService.kill(id);
         }
         catch (Exception ex) {
             logger.error("Failed to stop process {}", id, ex);

code/execution/java/nu/marginalia/actor/ExecutorActor.java

@@ -6,7 +6,7 @@ import java.util.Set;
 
 public enum ExecutorActor {
     PREC_EXPORT_ALL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
-    SYNC_NSFW_LISTS(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
+    UPDATE_NSFW_LISTS(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED, NodeProfile.SIDELOAD, NodeProfile.REALTIME),
 
     CRAWL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     RECRAWL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
@@ -14,6 +14,7 @@ public enum ExecutorActor {
     PROC_CRAWLER_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     PROC_PING_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED, NodeProfile.REALTIME),
     PROC_EXPORT_TASKS_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
+    PROC_NDP_SPAWNER(NodeProfile.MIXED, NodeProfile.REALTIME),
     ADJACENCY_CALCULATION(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     EXPORT_DATA(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     EXPORT_SEGMENTATION_MODEL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),

code/execution/java/nu/marginalia/actor/ExecutorActorControlService.java

@@ -49,6 +49,7 @@ public class ExecutorActorControlService {
                                        RecrawlSingleDomainActor recrawlSingleDomainActor,
                                        RestoreBackupActor restoreBackupActor,
                                        ConverterMonitorActor converterMonitorFSM,
+                                       NdpMonitorActor ndpMonitorActor,
                                        PingMonitorActor pingMonitorActor,
                                        CrawlerMonitorActor crawlerMonitorActor,
                                        LiveCrawlerMonitorActor liveCrawlerMonitorActor,
@@ -93,7 +94,7 @@ public class ExecutorActorControlService {
         register(ExecutorActor.PROC_PING_SPAWNER, pingMonitorActor);
         register(ExecutorActor.PROC_LIVE_CRAWL_SPAWNER, liveCrawlerMonitorActor);
         register(ExecutorActor.PROC_EXPORT_TASKS_SPAWNER, exportTasksMonitorActor);
-
+        register(ExecutorActor.PROC_NDP_SPAWNER, ndpMonitorActor);
         register(ExecutorActor.MONITOR_PROCESS_LIVENESS, processMonitorFSM);
         register(ExecutorActor.MONITOR_FILE_STORAGE, fileStorageMonitorActor);
 
@@ -112,7 +113,7 @@ public class ExecutorActorControlService {
         register(ExecutorActor.UPDATE_RSS, updateRssActor);
 
         register(ExecutorActor.MIGRATE_CRAWL_DATA, migrateCrawlDataActor);
-        register(ExecutorActor.SYNC_NSFW_LISTS, updateNsfwFiltersActor);
+        register(ExecutorActor.UPDATE_NSFW_LISTS, updateNsfwFiltersActor);
 
         if (serviceConfiguration.node() == 1) {
             register(ExecutorActor.PREC_EXPORT_ALL, exportAllPrecessionActor);

code/execution/java/nu/marginalia/actor/monitor/AbstractProcessSpawnerActor.java

@@ -4,11 +4,14 @@ import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.prototype.RecordActorPrototype;
-import nu.marginalia.actor.state.*;
-import nu.marginalia.mq.persistence.MqMessageHandlerRegistry;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.actor.state.ActorResumeBehavior;
+import nu.marginalia.actor.state.ActorStep;
+import nu.marginalia.actor.state.Resume;
+import nu.marginalia.actor.state.Terminal;
 import nu.marginalia.mq.MqMessageState;
+import nu.marginalia.mq.persistence.MqMessageHandlerRegistry;
 import nu.marginalia.mq.persistence.MqPersistence;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -24,13 +27,13 @@ import java.util.concurrent.atomic.AtomicBoolean;
 public class AbstractProcessSpawnerActor extends RecordActorPrototype {
 
     private final MqPersistence persistence;
-    private final ProcessService processService;
+    private final ProcessSpawnerService processSpawnerService;
 
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
     public static final int MAX_ATTEMPTS = 3;
     private final String inboxName;
-    private final ProcessService.ProcessId processId;
+    private final ProcessSpawnerService.ProcessId processId;
     private final ExecutorService executorService = Executors.newSingleThreadExecutor();
     private final int node;
 
@@ -50,7 +53,7 @@ public class AbstractProcessSpawnerActor extends RecordActorPrototype {
                 for (;;) {
                     var messages = persistence.eavesdrop(inboxName, 1);
 
-                    if (messages.isEmpty() && !processService.isRunning(processId)) {
+                    if (messages.isEmpty() && !processSpawnerService.isRunning(processId)) {
                         synchronized (processId) {
                             processId.wait(5000);
                         }
@@ -92,7 +95,7 @@ public class AbstractProcessSpawnerActor extends RecordActorPrototype {
                 catch (InterruptedException ex) {
                     // We get this exception when the process is cancelled by the user
 
-                    processService.kill(processId);
+                    processSpawnerService.kill(processId);
                     setCurrentMessageToDead();
 
                     yield new Aborted();
@@ -112,13 +115,13 @@ public class AbstractProcessSpawnerActor extends RecordActorPrototype {
     public AbstractProcessSpawnerActor(Gson gson,
                                        ServiceConfiguration configuration,
                                        MqPersistence persistence,
-                                       ProcessService processService,
+                                       ProcessSpawnerService processSpawnerService,
                                        String inboxName,
-                                       ProcessService.ProcessId processId) {
+                                       ProcessSpawnerService.ProcessId processId) {
         super(gson);
         this.node = configuration.node();
         this.persistence = persistence;
-        this.processService = processService;
+        this.processSpawnerService = processSpawnerService;
         this.inboxName = inboxName + ":" + node;
         this.processId = processId;
     }
@@ -149,7 +152,7 @@ public class AbstractProcessSpawnerActor extends RecordActorPrototype {
             // Run this call in a separate thread so that this thread can be interrupted waiting for it
             executorService.submit(() -> {
                 try {
-                    processService.trigger(processId);
+                    processSpawnerService.trigger(processId);
                 } catch (Exception e) {
                     logger.warn("Error in triggering process", e);
                     error.set(true);

code/execution/java/nu/marginalia/actor/proc/ConverterMonitorActor.java

@@ -4,9 +4,9 @@ import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
-import nu.marginalia.process.ProcessService;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 
 @Singleton
@@ -17,13 +17,13 @@ public class ConverterMonitorActor extends AbstractProcessSpawnerActor {
     public ConverterMonitorActor(Gson gson,
                                  ServiceConfiguration configuration,
                                  MqPersistence persistence,
-                                 ProcessService processService) {
+                                 ProcessSpawnerService processSpawnerService) {
         super(gson,
                 configuration,
                 persistence,
-                processService,
+                processSpawnerService,
                 ProcessInboxNames.CONVERTER_INBOX,
-                ProcessService.ProcessId.CONVERTER);
+                ProcessSpawnerService.ProcessId.CONVERTER);
     }
 
 

code/execution/java/nu/marginalia/actor/proc/CrawlerMonitorActor.java

@@ -4,9 +4,9 @@ import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
-import nu.marginalia.process.ProcessService;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 
 @Singleton
@@ -16,13 +16,13 @@ public class CrawlerMonitorActor extends AbstractProcessSpawnerActor {
     public CrawlerMonitorActor(Gson gson,
                                ServiceConfiguration configuration,
                                MqPersistence persistence,
-                               ProcessService processService) {
+                               ProcessSpawnerService processSpawnerService) {
         super(gson,
                 configuration,
                 persistence,
-                processService,
+                processSpawnerService,
                 ProcessInboxNames.CRAWLER_INBOX,
-                ProcessService.ProcessId.CRAWLER);
+                ProcessSpawnerService.ProcessId.CRAWLER);
     }
 
 

code/execution/java/nu/marginalia/actor/proc/ExportTaskMonitorActor.java

@@ -6,7 +6,7 @@ import com.google.inject.Singleton;
 import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.ProcessInboxNames;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 
 @Singleton
@@ -16,13 +16,13 @@ public class ExportTaskMonitorActor extends AbstractProcessSpawnerActor {
     public ExportTaskMonitorActor(Gson gson,
                                   ServiceConfiguration configuration,
                                   MqPersistence persistence,
-                                  ProcessService processService) {
+                                  ProcessSpawnerService processSpawnerService) {
         super(gson,
                 configuration,
                 persistence,
-                processService,
+                processSpawnerService,
                 ProcessInboxNames.EXPORT_TASK_INBOX,
-                ProcessService.ProcessId.EXPORT_TASKS);
+                ProcessSpawnerService.ProcessId.EXPORT_TASKS);
     }
 
 

code/execution/java/nu/marginalia/actor/proc/IndexConstructorMonitorActor.java

@@ -4,9 +4,9 @@ import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
-import nu.marginalia.process.ProcessService;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 
 @Singleton
@@ -17,13 +17,13 @@ public class IndexConstructorMonitorActor extends AbstractProcessSpawnerActor {
     public IndexConstructorMonitorActor(Gson gson,
                                         ServiceConfiguration configuration,
                                         MqPersistence persistence,
-                                        ProcessService processService) {
+                                        ProcessSpawnerService processSpawnerService) {
         super(gson,
                 configuration,
                 persistence,
-                processService,
+                processSpawnerService,
                 ProcessInboxNames.INDEX_CONSTRUCTOR_INBOX,
-                ProcessService.ProcessId.INDEX_CONSTRUCTOR);
+                ProcessSpawnerService.ProcessId.INDEX_CONSTRUCTOR);
     }
 
 

code/execution/java/nu/marginalia/actor/proc/LiveCrawlerMonitorActor.java

@@ -6,7 +6,7 @@ import com.google.inject.Singleton;
 import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.ProcessInboxNames;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 
 @Singleton
@@ -16,13 +16,13 @@ public class LiveCrawlerMonitorActor extends AbstractProcessSpawnerActor {
     public LiveCrawlerMonitorActor(Gson gson,
                                    ServiceConfiguration configuration,
                                    MqPersistence persistence,
-                                   ProcessService processService) {
+                                   ProcessSpawnerService processSpawnerService) {
         super(gson,
                 configuration,
                 persistence,
-                processService,
+                processSpawnerService,
                 ProcessInboxNames.LIVE_CRAWLER_INBOX,
-                ProcessService.ProcessId.LIVE_CRAWLER);
+                ProcessSpawnerService.ProcessId.LIVE_CRAWLER);
     }
 
 

code/execution/java/nu/marginalia/actor/proc/LoaderMonitorActor.java

@@ -4,9 +4,9 @@ import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
-import nu.marginalia.process.ProcessService;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 
 @Singleton
@@ -17,13 +17,13 @@ public class LoaderMonitorActor extends AbstractProcessSpawnerActor {
     public LoaderMonitorActor(Gson gson,
                               ServiceConfiguration configuration,
                               MqPersistence persistence,
-                              ProcessService processService) {
+                              ProcessSpawnerService processSpawnerService) {
 
         super(gson,
                 configuration,
-                persistence, processService,
+                persistence, processSpawnerService,
                 ProcessInboxNames.LOADER_INBOX,
-                ProcessService.ProcessId.LOADER);
+                ProcessSpawnerService.ProcessId.LOADER);
     }
 
 }

code/execution/java/nu/marginalia/actor/proc/NdpMonitorActor.java

@@ -0,0 +1,29 @@
+package nu.marginalia.actor.proc;
+
+import com.google.gson.Gson;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
+import nu.marginalia.mq.persistence.MqPersistence;
+import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.process.ProcessSpawnerService;
+import nu.marginalia.service.module.ServiceConfiguration;
+
+@Singleton
+public class NdpMonitorActor extends AbstractProcessSpawnerActor {
+
+    @Inject
+    public NdpMonitorActor(Gson gson,
+                                   ServiceConfiguration configuration,
+                                   MqPersistence persistence,
+                                   ProcessSpawnerService processSpawnerService) {
+        super(gson,
+                configuration,
+                persistence,
+                processSpawnerService,
+                ProcessInboxNames.NDP_INBOX,
+                ProcessSpawnerService.ProcessId.NDP);
+    }
+
+
+}

code/execution/java/nu/marginalia/actor/proc/PingMonitorActor.java

@@ -13,7 +13,7 @@ import nu.marginalia.mq.persistence.MqMessageHandlerRegistry;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.ProcessInboxNames;
 import nu.marginalia.mqapi.ping.PingRequest;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -25,17 +25,21 @@ import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 
+
+// Unlike other monitor actors, the ping monitor will not merely wait for a request
+// to be sent, but send one itself,  hence we can't extend AbstractProcessSpawnerActor
+// but have to reimplement a lot of the same logic ourselves.
 @Singleton
 public class PingMonitorActor extends RecordActorPrototype {
 
     private final MqPersistence persistence;
-    private final ProcessService processService;
+    private final ProcessSpawnerService processSpawnerService;
 
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
     public static final int MAX_ATTEMPTS = 3;
     private final String inboxName;
-    private final ProcessService.ProcessId processId;
+    private final ProcessSpawnerService.ProcessId processId;
     private final ExecutorService executorService = Executors.newSingleThreadExecutor();
     private final int node;
     private final Gson gson;
@@ -53,7 +57,6 @@ public class PingMonitorActor extends RecordActorPrototype {
         return switch (self) {
             case Initial i -> {
                 PingRequest request = new PingRequest();
-
                 persistence.sendNewMessage(inboxName, null, null,
                         "PingRequest",
                         gson.toJson(request),
@@ -65,7 +68,7 @@ public class PingMonitorActor extends RecordActorPrototype {
                 for (;;) {
                     var messages = persistence.eavesdrop(inboxName, 1);
 
-                    if (messages.isEmpty() && !processService.isRunning(processId)) {
+                    if (messages.isEmpty() && !processSpawnerService.isRunning(processId)) {
                         synchronized (processId) {
                             processId.wait(5000);
                         }
@@ -107,7 +110,7 @@ public class PingMonitorActor extends RecordActorPrototype {
                 catch (InterruptedException ex) {
                     // We get this exception when the process is cancelled by the user
 
-                    processService.kill(processId);
+                    processSpawnerService.kill(processId);
                     setCurrentMessageToDead();
 
                     yield new Aborted();
@@ -127,14 +130,14 @@ public class PingMonitorActor extends RecordActorPrototype {
     public PingMonitorActor(Gson gson,
                                        ServiceConfiguration configuration,
                                        MqPersistence persistence,
-                                       ProcessService processService) throws SQLException {
+                                       ProcessSpawnerService processSpawnerService) throws SQLException {
         super(gson);
         this.gson = gson;
         this.node = configuration.node();
         this.persistence = persistence;
-        this.processService = processService;
+        this.processSpawnerService = processSpawnerService;
         this.inboxName = ProcessInboxNames.PING_INBOX + ":" + node;
-        this.processId = ProcessService.ProcessId.PING;
+        this.processId = ProcessSpawnerService.ProcessId.PING;
     }
 
     /** Sets the message to dead in the database to avoid
@@ -163,7 +166,7 @@ public class PingMonitorActor extends RecordActorPrototype {
             // Run this call in a separate thread so that this thread can be interrupted waiting for it
             executorService.submit(() -> {
                 try {
-                    processService.trigger(processId);
+                    processSpawnerService.trigger(processId);
                 } catch (Exception e) {
                     logger.warn("Error in triggering process", e);
                     error.set(true);

code/execution/java/nu/marginalia/actor/proc/ProcessLivenessMonitorActor.java

@@ -8,7 +8,7 @@ import nu.marginalia.actor.prototype.RecordActorPrototype;
 import nu.marginalia.actor.state.ActorResumeBehavior;
 import nu.marginalia.actor.state.ActorStep;
 import nu.marginalia.actor.state.Resume;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.control.ServiceEventLog;
 import nu.marginalia.service.module.ServiceConfiguration;
 
@@ -21,7 +21,7 @@ import java.util.concurrent.TimeUnit;
 public class ProcessLivenessMonitorActor extends RecordActorPrototype {
 
     private final ServiceEventLog eventLogService;
-    private final ProcessService processService;
+    private final ProcessSpawnerService processSpawnerService;
     private final HikariDataSource dataSource;
 
     private final int node;
@@ -49,7 +49,7 @@ public class ProcessLivenessMonitorActor extends RecordActorPrototype {
                         var processId = heartbeat.getProcessId();
                         if (null == processId) continue;
 
-                        if (processService.isRunning(processId) && heartbeat.lastSeenMillis() < 10_000)
+                        if (processSpawnerService.isRunning(processId) && heartbeat.lastSeenMillis() < 10_000)
                             continue;
 
                         flagProcessAsStopped(heartbeat);
@@ -72,12 +72,12 @@ public class ProcessLivenessMonitorActor extends RecordActorPrototype {
     public ProcessLivenessMonitorActor(Gson gson,
                                        ServiceEventLog eventLogService,
                                        ServiceConfiguration configuration,
-                                       ProcessService processService,
+                                       ProcessSpawnerService processSpawnerService,
                                        HikariDataSource dataSource) {
         super(gson);
         this.node = configuration.node();
         this.eventLogService = eventLogService;
-        this.processService = processService;
+        this.processSpawnerService = processSpawnerService;
         this.dataSource = dataSource;
     }
 
@@ -208,8 +208,8 @@ public class ProcessLivenessMonitorActor extends RecordActorPrototype {
         public boolean isRunning() {
             return "RUNNING".equals(status);
         }
-        public ProcessService.ProcessId getProcessId() {
-            return ProcessService.translateExternalIdBase(processBase);
+        public ProcessSpawnerService.ProcessId getProcessId() {
+            return ProcessSpawnerService.translateExternalIdBase(processBase);
         }
     }
 

code/execution/java/nu/marginalia/actor/proc/ScrapeFeedsActor.java

@@ -47,6 +47,8 @@ public class ScrapeFeedsActor extends RecordActorPrototype {
 
     private final Path feedPath = WmsaHome.getHomePath().resolve("data/scrape-urls.txt");
 
+    private static boolean insertFoundDomains = Boolean.getBoolean("loader.insertFoundDomains");
+
     public record Initial() implements ActorStep {}
     @Resume(behavior = ActorResumeBehavior.RETRY)
     public record Wait(String ts) implements ActorStep {}
@@ -57,6 +59,8 @@ public class ScrapeFeedsActor extends RecordActorPrototype {
     public ActorStep transition(ActorStep self) throws Exception {
         return switch(self) {
             case Initial() -> {
+                if (!insertFoundDomains) yield new Error("Domain insertion prohibited, aborting");
+
                 if (nodeConfigurationService.get(nodeId).profile() != NodeProfile.REALTIME) {
                     yield new Error("Invalid node profile for RSS update");
                 }

code/execution/java/nu/marginalia/actor/task/ActorProcessWatcher.java

@@ -3,11 +3,11 @@ package nu.marginalia.actor.task;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.state.ActorControlFlowException;
-import nu.marginalia.mq.MqMessageState;
-import nu.marginalia.mq.persistence.MqPersistence;
-import nu.marginalia.process.ProcessService;
 import nu.marginalia.mq.MqMessage;
+import nu.marginalia.mq.MqMessageState;
 import nu.marginalia.mq.outbox.MqOutbox;
+import nu.marginalia.mq.persistence.MqPersistence;
+import nu.marginalia.process.ProcessSpawnerService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -20,13 +20,13 @@ public class ActorProcessWatcher {
 
     private static final Logger logger = LoggerFactory.getLogger(ActorProcessWatcher.class);
     private final MqPersistence persistence;
-    private final ProcessService processService;
+    private final ProcessSpawnerService processSpawnerService;
 
     @Inject
     public ActorProcessWatcher(MqPersistence persistence,
-                               ProcessService processService) {
+                               ProcessSpawnerService processSpawnerService) {
         this.persistence = persistence;
-        this.processService = processService;
+        this.processSpawnerService = processSpawnerService;
     }
 
     /** Wait for a process to start, and then wait for a response from the process,
@@ -36,7 +36,7 @@ public class ActorProcessWatcher {
      * <p>
      * When interrupted, the process is killed and the message is marked as dead.
      */
-    public MqMessage waitResponse(MqOutbox outbox, ProcessService.ProcessId processId, long msgId)
+    public MqMessage waitResponse(MqOutbox outbox, ProcessSpawnerService.ProcessId processId, long msgId)
             throws ActorControlFlowException, InterruptedException, SQLException
     {
         // enums values only have a single instance,
@@ -65,7 +65,7 @@ public class ActorProcessWatcher {
                 // This will prevent the monitor process from attempting to respawn the process as we kill it
 
                 outbox.flagAsDead(msgId);
-                processService.kill(processId);
+                processSpawnerService.kill(processId);
 
                 logger.info("Process {} killed due to interrupt", processId);
             }
@@ -94,12 +94,12 @@ public class ActorProcessWatcher {
     }
 
     /** Wait the specified time for the specified process to start running (does not start the process) */
-    private boolean waitForProcess(ProcessService.ProcessId processId, TimeUnit unit, int duration) throws InterruptedException {
+    private boolean waitForProcess(ProcessSpawnerService.ProcessId processId, TimeUnit unit, int duration) throws InterruptedException {
 
         // Wait for process to start
         long deadline = System.currentTimeMillis() + unit.toMillis(duration);
         while (System.currentTimeMillis() < deadline) {
-            if (processService.isRunning(processId))
+            if (processSpawnerService.isRunning(processId))
                 return true;
 
             TimeUnit.MILLISECONDS.sleep(100);

code/execution/java/nu/marginalia/actor/task/ConvertActor.java

@@ -12,7 +12,7 @@ import nu.marginalia.mq.MqMessageState;
 import nu.marginalia.mq.outbox.MqOutbox;
 import nu.marginalia.mqapi.converting.ConvertRequest;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.sideload.RedditSideloadHelper;
 import nu.marginalia.sideload.SideloadHelper;
 import nu.marginalia.sideload.StackExchangeSideloadHelper;
@@ -218,7 +218,7 @@ public class ConvertActor extends RecordActorPrototype {
                 );
             }
             case ConvertWait(FileStorageId destFid, long msgId) -> {
-                var rsp = processWatcher.waitResponse(mqConverterOutbox, ProcessService.ProcessId.CONVERTER, msgId);
+                var rsp = processWatcher.waitResponse(mqConverterOutbox, ProcessSpawnerService.ProcessId.CONVERTER, msgId);
 
                 if (rsp.state() != MqMessageState.OK) {
                     yield new Error("Converter failed");

code/execution/java/nu/marginalia/actor/task/ConvertAndLoadActor.java

@@ -18,7 +18,7 @@ import nu.marginalia.mqapi.index.IndexName;
 import nu.marginalia.mqapi.loading.LoadRequest;
 import nu.marginalia.nodecfg.NodeConfigurationService;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.service.module.ServiceConfiguration;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
@@ -95,7 +95,7 @@ public class ConvertAndLoadActor extends RecordActorPrototype {
             case Convert(FileStorageId crawlId, FileStorageId processedId, long msgId) when msgId < 0 ->
                     new Convert(crawlId, processedId, mqConverterOutbox.sendAsync(ConvertRequest.forCrawlData(crawlId, processedId)));
             case Convert(FileStorageId crawlId, FileStorageId processedId, long msgId) -> {
-                var rsp = processWatcher.waitResponse(mqConverterOutbox, ProcessService.ProcessId.CONVERTER, msgId);
+                var rsp = processWatcher.waitResponse(mqConverterOutbox, ProcessSpawnerService.ProcessId.CONVERTER, msgId);
 
                 if (rsp.state() != MqMessageState.OK)
                     yield new Error("Converter failed");
@@ -129,7 +129,7 @@ public class ConvertAndLoadActor extends RecordActorPrototype {
                 yield new Load(processedIds, id);
             }
             case Load(List<FileStorageId> processedIds, long msgId) -> {
-                var rsp = processWatcher.waitResponse(mqLoaderOutbox, ProcessService.ProcessId.LOADER, msgId);
+                var rsp = processWatcher.waitResponse(mqLoaderOutbox, ProcessSpawnerService.ProcessId.LOADER, msgId);
 
                 if (rsp.state() != MqMessageState.OK) {
                     yield new Error("Loader failed");
@@ -165,7 +165,7 @@ public class ConvertAndLoadActor extends RecordActorPrototype {
             }
             case ReindexFwd(long id) when id < 0 -> new ReindexFwd(createIndex(IndexName.FORWARD));
             case ReindexFwd(long id) -> {
-                var rsp = processWatcher.waitResponse(mqIndexConstructorOutbox, ProcessService.ProcessId.INDEX_CONSTRUCTOR, id);
+                var rsp = processWatcher.waitResponse(mqIndexConstructorOutbox, ProcessSpawnerService.ProcessId.INDEX_CONSTRUCTOR, id);
 
                 if (rsp.state() != MqMessageState.OK)
                     yield new Error("Forward index construction failed");
@@ -174,7 +174,7 @@ public class ConvertAndLoadActor extends RecordActorPrototype {
             }
             case ReindexFull(long id) when id < 0 -> new ReindexFull(createIndex(IndexName.REVERSE_FULL));
             case ReindexFull(long id) -> {
-                var rsp = processWatcher.waitResponse(mqIndexConstructorOutbox, ProcessService.ProcessId.INDEX_CONSTRUCTOR, id);
+                var rsp = processWatcher.waitResponse(mqIndexConstructorOutbox, ProcessSpawnerService.ProcessId.INDEX_CONSTRUCTOR, id);
 
                 if (rsp.state() != MqMessageState.OK)
                     yield new Error("Full index construction failed");
@@ -183,7 +183,7 @@ public class ConvertAndLoadActor extends RecordActorPrototype {
             }
             case ReindexPrio(long id) when id < 0 -> new ReindexPrio(createIndex(IndexName.REVERSE_PRIO));
             case ReindexPrio(long id) -> {
-                var rsp = processWatcher.waitResponse(mqIndexConstructorOutbox, ProcessService.ProcessId.INDEX_CONSTRUCTOR, id);
+                var rsp = processWatcher.waitResponse(mqIndexConstructorOutbox, ProcessSpawnerService.ProcessId.INDEX_CONSTRUCTOR, id);
 
                 if (rsp.state() != MqMessageState.OK)
                     yield new Error("Prio index construction failed");

code/execution/java/nu/marginalia/actor/task/CrawlActor.java

@@ -13,7 +13,7 @@ import nu.marginalia.mq.MqMessageState;
 import nu.marginalia.mq.outbox.MqOutbox;
 import nu.marginalia.mqapi.crawling.CrawlRequest;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.storage.model.FileStorageType;
@@ -76,7 +76,7 @@ public class CrawlActor extends RecordActorPrototype {
             case Crawl (long msgId, FileStorageId fid, boolean cascadeLoad) -> {
                 var rsp = processWatcher.waitResponse(
                         mqCrawlerOutbox,
-                        ProcessService.ProcessId.CRAWLER,
+                        ProcessSpawnerService.ProcessId.CRAWLER,
                         msgId);
 
                 if (rsp.state() != MqMessageState.OK) {

code/execution/java/nu/marginalia/actor/task/ExportAtagsActor.java

@@ -10,7 +10,7 @@ import nu.marginalia.mq.outbox.MqOutbox;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.tasks.ExportTaskRequest;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.storage.model.FileStorageState;
@@ -55,7 +55,7 @@ public class ExportAtagsActor extends RecordActorPrototype {
                 yield new Run(responseMsgId, crawlId, destId, newMsgId);
             }
             case Run(long responseMsgId, FileStorageId crawlId, FileStorageId destId, long msgId) -> {
-                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessSpawnerService.ProcessId.EXPORT_TASKS, msgId);
 
                 if (rsp.state() != MqMessageState.OK) {
                     storageService.flagFileForDeletion(destId);

code/execution/java/nu/marginalia/actor/task/ExportFeedsActor.java

@@ -10,7 +10,7 @@ import nu.marginalia.mq.outbox.MqOutbox;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.tasks.ExportTaskRequest;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.storage.model.FileStorageState;
@@ -54,7 +54,7 @@ public class ExportFeedsActor extends RecordActorPrototype {
                 yield new Run(responseMsgId, crawlId, destId, newMsgId);
             }
             case Run(long responseMsgId, _, FileStorageId destId, long msgId) -> {
-                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessSpawnerService.ProcessId.EXPORT_TASKS, msgId);
 
                 if (rsp.state() != MqMessageState.OK) {
                     storageService.flagFileForDeletion(destId);

code/execution/java/nu/marginalia/actor/task/ExportSampleDataActor.java

@@ -9,7 +9,7 @@ import nu.marginalia.mq.MqMessageState;
 import nu.marginalia.mq.outbox.MqOutbox;
 import nu.marginalia.mqapi.tasks.ExportTaskRequest;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.storage.model.FileStorageState;
@@ -52,7 +52,7 @@ public class ExportSampleDataActor extends RecordActorPrototype {
                 yield new Run(crawlId, destId, size, ctFilter, name, newMsgId);
             }
             case Run(_, FileStorageId destId, _, _, _, long msgId) -> {
-                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessSpawnerService.ProcessId.EXPORT_TASKS, msgId);
 
                 if (rsp.state() != MqMessageState.OK) {
                     storageService.flagFileForDeletion(destId);

code/execution/java/nu/marginalia/actor/task/ExportTermFreqActor.java

@@ -10,7 +10,7 @@ import nu.marginalia.mq.outbox.MqOutbox;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqapi.tasks.ExportTaskRequest;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.storage.model.FileStorageState;
@@ -52,7 +52,7 @@ public class ExportTermFreqActor extends RecordActorPrototype {
                 yield new Run(responseMsgId, crawlId, destId, newMsgId);
             }
             case Run(long responseMsgId, _, FileStorageId destId, long msgId) -> {
-                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessSpawnerService.ProcessId.EXPORT_TASKS, msgId);
 
                 if (rsp.state() != MqMessageState.OK) {
                     storageService.flagFileForDeletion(destId);

code/execution/java/nu/marginalia/actor/task/LiveCrawlActor.java

@@ -13,7 +13,7 @@ import nu.marginalia.mq.MqMessageState;
 import nu.marginalia.mq.outbox.MqOutbox;
 import nu.marginalia.mqapi.crawling.LiveCrawlRequest;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.storage.FileStorageService;
 import org.apache.commons.io.FileUtils;
 import org.slf4j.Logger;
@@ -44,7 +44,6 @@ public class LiveCrawlActor extends RecordActorPrototype {
 
     @Override
     public ActorStep transition(ActorStep self) throws Exception {
-        logger.info("{}", self);
         return switch (self) {
             case Initial() -> {
                 yield new Monitor("-");
@@ -75,7 +74,7 @@ public class LiveCrawlActor extends RecordActorPrototype {
                 yield new LiveCrawl(feedsHash, id);
             }
             case LiveCrawl(String feedsHash, long msgId) -> {
-                var rsp = processWatcher.waitResponse(mqLiveCrawlerOutbox, ProcessService.ProcessId.LIVE_CRAWLER, msgId);
+                var rsp = processWatcher.waitResponse(mqLiveCrawlerOutbox, ProcessSpawnerService.ProcessId.LIVE_CRAWLER, msgId);
 
                 if (rsp.state() != MqMessageState.OK) {
                     yield new Error("Crawler failed");

code/execution/java/nu/marginalia/actor/task/RecrawlSingleDomainActor.java

@@ -11,7 +11,7 @@ import nu.marginalia.mq.MqMessageState;
 import nu.marginalia.mq.outbox.MqOutbox;
 import nu.marginalia.mqapi.crawling.CrawlRequest;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.storage.model.FileStorageType;
@@ -51,7 +51,7 @@ public class RecrawlSingleDomainActor extends RecordActorPrototype {
             case Crawl (long msgId) -> {
                 var rsp = processWatcher.waitResponse(
                         mqCrawlerOutbox,
-                        ProcessService.ProcessId.CRAWLER,
+                        ProcessSpawnerService.ProcessId.CRAWLER,
                         msgId);
 
                 if (rsp.state() != MqMessageState.OK) {

code/execution/java/nu/marginalia/actor/task/TriggerAdjacencyCalculationActor.java

@@ -9,7 +9,7 @@ import nu.marginalia.mq.MqMessageState;
 import nu.marginalia.mq.outbox.MqOutbox;
 import nu.marginalia.mqapi.tasks.ExportTaskRequest;
 import nu.marginalia.process.ProcessOutboxes;
-import nu.marginalia.process.ProcessService;
+import nu.marginalia.process.ProcessSpawnerService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -34,7 +34,7 @@ public class TriggerAdjacencyCalculationActor extends RecordActorPrototype {
                 yield new Run(newMsgId);
             }
             case Run(long msgId) -> {
-                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessService.ProcessId.EXPORT_TASKS, msgId);
+                var rsp = processWatcher.waitResponse(exportTasksOutbox, ProcessSpawnerService.ProcessId.EXPORT_TASKS, msgId);
 
                 if (rsp.state() != MqMessageState.OK) {
                     yield new Error("Exporter failed");

code/execution/java/nu/marginalia/actor/task/UpdateNsfwFiltersActor.java

@@ -5,6 +5,8 @@ import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.actor.prototype.RecordActorPrototype;
 import nu.marginalia.actor.state.ActorStep;
+import nu.marginalia.mq.MqMessageState;
+import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.nsfw.NsfwDomainFilter;
 import nu.marginalia.service.module.ServiceConfiguration;
 
@@ -12,23 +14,26 @@ import nu.marginalia.service.module.ServiceConfiguration;
 public class UpdateNsfwFiltersActor extends RecordActorPrototype {
     private final ServiceConfiguration serviceConfiguration;
     private final NsfwDomainFilter nsfwDomainFilter;
+    private final MqPersistence persistence;
 
-    public record Initial() implements ActorStep {}
-    public record Run() implements ActorStep {}
+    public record Initial(long respondMsgId) implements ActorStep {}
+    public record Run(long respondMsgId) implements ActorStep {}
 
     @Override
     public ActorStep transition(ActorStep self) throws Exception {
         return switch(self) {
-            case Initial() -> {
+            case Initial(long respondMsgId) -> {
                 if (serviceConfiguration.node() != 1) {
+                    persistence.updateMessageState(respondMsgId, MqMessageState.ERR);
                     yield new Error("This actor can only run on node 1");
                 }
                 else {
-                    yield new Run();
+                    yield new Run(respondMsgId);
                 }
             }
-            case Run() -> {
+            case Run(long respondMsgId) -> {
                 nsfwDomainFilter.fetchLists();
+                persistence.updateMessageState(respondMsgId, MqMessageState.OK);
                 yield new End();
             }
             default -> new Error();
@@ -43,11 +48,13 @@ public class UpdateNsfwFiltersActor extends RecordActorPrototype {
     @Inject
     public UpdateNsfwFiltersActor(Gson gson,
                                   ServiceConfiguration serviceConfiguration,
-                                  NsfwDomainFilter nsfwDomainFilter)
+                                  NsfwDomainFilter nsfwDomainFilter,
+                                  MqPersistence persistence)
     {
         super(gson);
         this.serviceConfiguration = serviceConfiguration;
         this.nsfwDomainFilter = nsfwDomainFilter;
+        this.persistence = persistence;
     }
 
 }

code/execution/java/nu/marginalia/execution/ExecutorCrawlGrpcService.java

@@ -1,6 +1,7 @@
 package nu.marginalia.execution;
 
 import com.google.inject.Inject;
+import io.grpc.Status;
 import io.grpc.stub.StreamObserver;
 import nu.marginalia.actor.ExecutorActor;
 import nu.marginalia.actor.ExecutorActorControlService;
@@ -36,7 +37,7 @@ public class ExecutorCrawlGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -52,7 +53,7 @@ public class ExecutorCrawlGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -66,7 +67,7 @@ public class ExecutorCrawlGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -80,7 +81,7 @@ public class ExecutorCrawlGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -98,7 +99,7 @@ public class ExecutorCrawlGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 

code/execution/java/nu/marginalia/execution/ExecutorExportGrpcService.java

@@ -2,6 +2,7 @@ package nu.marginalia.execution;
 
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
+import io.grpc.Status;
 import io.grpc.stub.StreamObserver;
 import nu.marginalia.actor.ExecutorActor;
 import nu.marginalia.actor.ExecutorActorControlService;
@@ -38,7 +39,7 @@ public class ExecutorExportGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -57,7 +58,7 @@ public class ExecutorExportGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -73,7 +74,7 @@ public class ExecutorExportGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -87,7 +88,7 @@ public class ExecutorExportGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -99,7 +100,7 @@ public class ExecutorExportGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -114,14 +115,14 @@ public class ExecutorExportGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
     @Override
     public void exportAllAtags(Empty request, StreamObserver<Empty> responseObserver) {
         if (serviceConfiguration.node() != 1) {
-            responseObserver.onError(new IllegalArgumentException("Export all atags is only available on node 1"));
+            responseObserver.onError(Status.UNAVAILABLE.withDescription("Export all atags is only available on node 1").asRuntimeException());
         }
         try {
             actorControlService.startFrom(ExecutorActor.PREC_EXPORT_ALL,
@@ -131,7 +132,7 @@ public class ExecutorExportGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -145,7 +146,7 @@ public class ExecutorExportGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -159,7 +160,7 @@ public class ExecutorExportGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 }

code/execution/java/nu/marginalia/execution/ExecutorGrpcService.java

@@ -1,6 +1,7 @@
 package nu.marginalia.execution;
 
 import com.google.inject.Inject;
+import io.grpc.Status;
 import io.grpc.stub.StreamObserver;
 import nu.marginalia.WmsaHome;
 import nu.marginalia.actor.ActorApi;
@@ -10,6 +11,7 @@ import nu.marginalia.actor.state.ActorStateInstance;
 import nu.marginalia.actor.task.DownloadSampleActor;
 import nu.marginalia.actor.task.RestoreBackupActor;
 import nu.marginalia.actor.task.TriggerAdjacencyCalculationActor;
+import nu.marginalia.actor.task.UpdateNsfwFiltersActor;
 import nu.marginalia.functions.execution.api.*;
 import nu.marginalia.service.module.ServiceConfiguration;
 import nu.marginalia.service.server.DiscoverableService;
@@ -57,7 +59,7 @@ public class ExecutorGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -69,7 +71,7 @@ public class ExecutorGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -81,7 +83,7 @@ public class ExecutorGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -95,7 +97,7 @@ public class ExecutorGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -111,7 +113,7 @@ public class ExecutorGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -127,7 +129,7 @@ public class ExecutorGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -202,7 +204,7 @@ public class ExecutorGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -228,7 +230,7 @@ public class ExecutorGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -263,4 +265,19 @@ public class ExecutorGrpcService
         System.exit(0);
     }
 
+    @Override
+    public void updateNsfwFilters(RpcUpdateNsfwFilters request, StreamObserver<Empty> responseObserver) {
+        logger.info("Got request {}", request);
+        try {
+            actorControlService.startFrom(ExecutorActor.UPDATE_NSFW_LISTS,
+                    new UpdateNsfwFiltersActor.Initial(request.getMsgId()));
+
+            responseObserver.onNext(Empty.getDefaultInstance());
+            responseObserver.onCompleted();
+        }
+        catch (Exception e) {
+            logger.error("Failed to update nsfw filters", e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
+        }
+    }
 }

code/execution/java/nu/marginalia/execution/ExecutorSideloadGrpcService.java

@@ -1,6 +1,7 @@
 package nu.marginalia.execution;
 
 import com.google.inject.Inject;
+import io.grpc.Status;
 import io.grpc.stub.StreamObserver;
 import nu.marginalia.actor.ExecutorActor;
 import nu.marginalia.actor.ExecutorActorControlService;
@@ -33,7 +34,7 @@ public class ExecutorSideloadGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -48,7 +49,7 @@ public class ExecutorSideloadGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -63,7 +64,7 @@ public class ExecutorSideloadGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -78,7 +79,7 @@ public class ExecutorSideloadGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -93,7 +94,7 @@ public class ExecutorSideloadGrpcService
             responseObserver.onCompleted();
         }
         catch (Exception e) {
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 

code/execution/java/nu/marginalia/process/ProcessSpawnerService.java

@@ -8,6 +8,7 @@ import nu.marginalia.crawl.CrawlerMain;
 import nu.marginalia.index.IndexConstructorMain;
 import nu.marginalia.livecrawler.LiveCrawlerMain;
 import nu.marginalia.loading.LoaderMain;
+import nu.marginalia.ndp.NdpMain;
 import nu.marginalia.ping.PingMain;
 import nu.marginalia.service.control.ServiceEventLog;
 import nu.marginalia.service.server.BaseServiceParams;
@@ -28,7 +29,7 @@ import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
 
 @Singleton
-public class ProcessService {
+public class ProcessSpawnerService {
     private final Logger logger = LoggerFactory.getLogger(getClass());
     private final Marker processMarker = MarkerFactory.getMarker("PROCESS");
 
@@ -57,6 +58,7 @@ public class ProcessService {
         CONVERTER(ConverterMain.class),
         LOADER(LoaderMain.class),
         INDEX_CONSTRUCTOR(IndexConstructorMain.class),
+        NDP(NdpMain.class),
         EXPORT_TASKS(ExportTasksMain.class),
         ;
 
@@ -72,6 +74,7 @@ public class ProcessService {
                 case CONVERTER -> "CONVERTER_PROCESS_OPTS";
                 case LOADER -> "LOADER_PROCESS_OPTS";
                 case PING -> "PING_PROCESS_OPTS";
+                case NDP -> "NDP_PROCESS_OPTS";
                 case INDEX_CONSTRUCTOR -> "INDEX_CONSTRUCTION_PROCESS_OPTS";
                 case EXPORT_TASKS -> "EXPORT_TASKS_PROCESS_OPTS";
             };
@@ -85,7 +88,7 @@ public class ProcessService {
     }
 
     @Inject
-    public ProcessService(BaseServiceParams params) {
+    public ProcessSpawnerService(BaseServiceParams params) {
         this.eventLog = params.eventLog;
         this.node = params.configuration.node();
     }

code/execution/java/nu/marginalia/svc/ExecutorFileTransferService.java

@@ -1,4 +1,4 @@
-package nu.marginalia.executor;
+package nu.marginalia.svc;
 
 import com.google.inject.Inject;
 import nu.marginalia.storage.FileStorageService;

code/execution/readme.md

@@ -1,5 +1,5 @@
 The execution subsystem is responsible for the execution of long running tasks on each
-index node.  It lives in the [executor-service](../services-core/executor-service) module. 
+index node.  It lives in the [index-service](../services-core/index-service) module. 
 
 It accomplishes this using the [message queue and actor library](../libraries/message-queue/),
 which permits program state to survive crashes and reboots.

code/execution/test/nu/marginalia/svc/ExecutorFileTransferServiceTest.java

@@ -1,4 +1,4 @@
-package nu.marginalia.executor;
+package nu.marginalia.svc;
 
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorage;

code/functions/domain-info/api/java/nu/marginalia/api/domains/DomainInfoClient.java

@@ -2,6 +2,8 @@ package nu.marginalia.api.domains;
 
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
+import nu.marginalia.api.domains.model.DomainInformation;
+import nu.marginalia.api.domains.model.SimilarDomain;
 import nu.marginalia.service.client.GrpcChannelPoolFactory;
 import nu.marginalia.service.client.GrpcSingleNodeChannelPool;
 import nu.marginalia.service.discovery.property.ServiceKey;
@@ -10,16 +12,19 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.util.List;
-import java.util.concurrent.*;
-
-import nu.marginalia.api.domains.model.*;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
 
 @Singleton
 public class DomainInfoClient {
     private static final Logger logger = LoggerFactory.getLogger(DomainInfoClient.class);
 
     private final GrpcSingleNodeChannelPool<DomainInfoAPIGrpc.DomainInfoAPIBlockingStub> channelPool;
-    private final ExecutorService executor = Executors.newWorkStealingPool(8);
+
+
+    private static final boolean useLoom = Boolean.getBoolean("system.experimentalUseLoom");
+    private static final ExecutorService executor = useLoom ? Executors.newVirtualThreadPerTaskExecutor() : Executors.newWorkStealingPool(8);
 
     @Inject
     public DomainInfoClient(GrpcChannelPoolFactory factory) {

code/functions/live-capture/api/java/nu/marginalia/api/domsample/DomSampleClient.java

@@ -0,0 +1,114 @@
+package nu.marginalia.api.domsample;
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import io.grpc.Status;
+import io.grpc.StatusRuntimeException;
+import nu.marginalia.service.client.GrpcChannelPoolFactory;
+import nu.marginalia.service.client.GrpcSingleNodeChannelPool;
+import nu.marginalia.service.discovery.property.ServiceKey;
+import nu.marginalia.service.discovery.property.ServicePartition;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutorService;
+
+@Singleton
+public class DomSampleClient {
+    private final GrpcSingleNodeChannelPool<DomSampleApiGrpc.DomSampleApiBlockingStub> channelPool;
+    private static final Logger logger = LoggerFactory.getLogger(DomSampleClient.class);
+
+    @Inject
+    public DomSampleClient(GrpcChannelPoolFactory factory) {
+
+        // The client is only interested in the primary node
+        var key = ServiceKey.forGrpcApi(DomSampleApiGrpc.class, ServicePartition.any());
+        this.channelPool = factory.createSingle(key, DomSampleApiGrpc::newBlockingStub);
+    }
+
+    public Optional<RpcDomainSample> getSample(String domainName) {
+        try {
+            var val = channelPool.call(DomSampleApiGrpc.DomSampleApiBlockingStub::getSample)
+                    .run(RpcDomainName.newBuilder().setDomainName(domainName).build());
+
+            return Optional.of(val);
+        }
+        catch (StatusRuntimeException sre) {
+            if (sre.getStatus() != Status.NOT_FOUND) {
+                logger.error("Failed to fetch DOM sample", sre);
+            }
+            return Optional.empty();
+        }
+    }
+
+    public Optional<RpcDomainSampleRequests> getSampleRequests(String domainName) {
+        try {
+            var val = channelPool.call(DomSampleApiGrpc.DomSampleApiBlockingStub::getSampleRequests)
+                    .run(RpcDomainName.newBuilder().setDomainName(domainName).build());
+
+            return Optional.of(val);
+        }
+        catch (StatusRuntimeException sre) {
+            if (sre.getStatus() != Status.NOT_FOUND) {
+                logger.error("Failed to fetch DOM sample", sre);
+            }
+            return Optional.empty();
+        }
+    }
+
+    public boolean hasSample(String domainName) {
+        try {
+            return channelPool.call(DomSampleApiGrpc.DomSampleApiBlockingStub::hasSample)
+                    .run(RpcDomainName.newBuilder().setDomainName(domainName).build())
+                    .getAnswer();
+        }
+        catch (StatusRuntimeException sre) {
+            return false;
+        }
+    }
+
+    public CompletableFuture<Boolean> hasSample(String domainName, ExecutorService executor) {
+        try {
+            return channelPool.call(DomSampleApiGrpc.DomSampleApiBlockingStub::hasSample)
+                    .async(executor)
+                    .run(RpcDomainName.newBuilder().setDomainName(domainName).build())
+                    .thenApply(RpcBooleanRsp::getAnswer);
+        }
+        catch (StatusRuntimeException sre) {
+            return CompletableFuture.completedFuture(false);
+        }
+    }
+
+    public CompletableFuture<RpcDomainSample> getSampleAsync(String domainName, ExecutorService executorService) {
+        return channelPool.call(DomSampleApiGrpc.DomSampleApiBlockingStub::getSample)
+                .async(executorService)
+                .run(RpcDomainName.newBuilder().setDomainName(domainName).build());
+    }
+
+    public List<RpcDomainSample> getAllSamples(String domainName) {
+        try {
+            Iterator<RpcDomainSample> val = channelPool.call(DomSampleApiGrpc.DomSampleApiBlockingStub::getAllSamples)
+                    .run(RpcDomainName.newBuilder().setDomainName(domainName).build());
+
+            List<RpcDomainSample> ret = new ArrayList<>();
+            val.forEachRemaining(ret::add);
+            return ret;
+        }
+        catch (StatusRuntimeException sre) {
+            logger.error("Failed to fetch DOM sample");
+            return List.of();
+        }
+    }
+
+    public boolean waitReady(Duration duration) throws InterruptedException {
+        return channelPool.awaitChannel(duration);
+    }
+
+
+}

code/functions/live-capture/api/java/nu/marginalia/api/feeds/FeedsClient.java

@@ -11,6 +11,7 @@ import nu.marginalia.service.discovery.property.ServicePartition;
 import nu.marginalia.service.module.ServiceConfiguration;
 
 import javax.annotation.CheckReturnValue;
+import java.time.Duration;
 import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
@@ -23,7 +24,9 @@ import java.util.function.BiConsumer;
 
 @Singleton
 public class FeedsClient {
-    private final ExecutorService executorService = Executors.newCachedThreadPool();
+    private static final boolean useLoom = Boolean.getBoolean("system.experimentalUseLoom");
+    private static final ExecutorService executorService = useLoom ? Executors.newVirtualThreadPerTaskExecutor() : Executors.newCachedThreadPool();
+
     private final GrpcSingleNodeChannelPool<FeedApiGrpc.FeedApiBlockingStub> channelPool;
     private final MqOutbox updateFeedsOutbox;
 
@@ -59,6 +62,11 @@ public class FeedsClient {
                 .forEachRemaining(rsp -> consumer.accept(rsp.getDomain(), new ArrayList<>(rsp.getUrlList())));
     }
 
+    public boolean waitReady(Duration duration) throws InterruptedException {
+        return channelPool.awaitChannel(duration);
+    }
+
+
     /** Get the hash of the feed data, for identifying when the data has been updated */
     public String getFeedDataHash() {
         return channelPool.call(FeedApiGrpc.FeedApiBlockingStub::getFeedDataHash)

code/functions/live-capture/api/src/main/protobuf/dom-sample.proto

@@ -0,0 +1,47 @@
+syntax="proto3";
+package nu.marginalia.api.domsample;
+
+option java_package="nu.marginalia.api.domsample";
+option java_multiple_files=true;
+
+
+service DomSampleApi {
+  rpc getSample(RpcDomainName) returns (RpcDomainSample) {}
+  rpc getSampleRequests(RpcDomainName) returns (RpcDomainSampleRequests) {}
+  rpc hasSample(RpcDomainName) returns (RpcBooleanRsp) {}
+  rpc getAllSamples(RpcDomainName) returns (stream RpcDomainSample) {}
+}
+
+message RpcDomainName {
+  string domainName = 1;
+}
+
+message RpcBooleanRsp {
+  bool answer = 1;
+}
+
+message RpcDomainSampleRequests {
+  string domainName = 1;
+  string url = 2;
+  repeated RpcOutgoingRequest outgoingRequests = 5;
+}
+
+message RpcDomainSample {
+  string domainName = 1;
+  string url = 2;
+  bytes htmlSampleZstd = 3;
+  bool accepted_popover = 4;
+  repeated RpcOutgoingRequest outgoingRequests = 5;
+}
+
+message RpcOutgoingRequest {
+  RequestMethod method = 1;
+  int64 timestamp = 2;
+  string url = 3;
+
+  enum RequestMethod {
+    GET = 0;
+    POST = 1;
+    OTHER = 2;
+  };
+}

code/functions/live-capture/build.gradle

@@ -31,10 +31,12 @@ dependencies {
     implementation libs.jsoup
     implementation libs.opencsv
     implementation libs.slop
+    implementation libs.zstd
     implementation libs.sqlite
     implementation libs.bundles.slf4j
     implementation libs.commons.lang3
     implementation libs.commons.io
+    implementation libs.httpclient
     implementation libs.wiremock
 
     implementation libs.prometheus

code/functions/live-capture/java/nu/marginalia/domsample/DomSampleGrpcService.java

@@ -0,0 +1,176 @@
+package nu.marginalia.domsample;
+
+import com.github.luben.zstd.Zstd;
+import com.google.inject.Inject;
+import com.google.protobuf.ByteString;
+import io.grpc.Status;
+import io.grpc.stub.StreamObserver;
+import nu.marginalia.api.domsample.*;
+import nu.marginalia.domsample.db.DomSampleDb;
+import nu.marginalia.service.server.DiscoverableService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+
+public class DomSampleGrpcService
+        extends DomSampleApiGrpc.DomSampleApiImplBase
+        implements DiscoverableService
+{
+    private static final Logger logger = LoggerFactory.getLogger(DomSampleGrpcService.class);
+
+    private final DomSampleDb domSampleDb;
+
+    @Inject
+    public DomSampleGrpcService(DomSampleDb domSampleDb) {
+        this.domSampleDb = domSampleDb;
+    }
+
+    @Override
+    public void getSample(RpcDomainName request, StreamObserver<RpcDomainSample> responseObserver) {
+        String domainName = request.getDomainName();
+        if (domainName.isBlank()) {
+            responseObserver.onError(Status.INVALID_ARGUMENT
+                            .withDescription("Invalid domain name")
+                            .asRuntimeException());
+            return;
+        }
+
+        try {
+            List<DomSampleDb.Sample> dbRecords = domSampleDb.getSamples(domainName);
+            if (dbRecords.isEmpty()) {
+                responseObserver.onError(Status.NOT_FOUND.withDescription("No sample found").asRuntimeException());
+                return;
+            }
+
+            // Grab the first sample
+            RpcDomainSample.Builder response = convertFullSample(dbRecords.getFirst());
+
+            responseObserver.onNext(response.build());
+            responseObserver.onCompleted();
+        }
+        catch (Exception e) {
+            logger.error("Error in getSample()", e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
+        }
+    }
+
+    @Override
+    public void getSampleRequests(RpcDomainName request, StreamObserver<RpcDomainSampleRequests> responseObserver) {
+        String domainName = request.getDomainName();
+        if (domainName.isBlank()) {
+            responseObserver.onError(Status.INVALID_ARGUMENT
+                    .withDescription("Invalid domain name")
+                    .asRuntimeException());
+            return;
+        }
+
+        try {
+            List<DomSampleDb.Sample> dbRecords = domSampleDb.getSamples(domainName);
+            if (dbRecords.isEmpty()) {
+                responseObserver.onError(Status.NOT_FOUND.withDescription("No sample found").asRuntimeException());
+                return;
+            }
+
+            // Grab the first sample
+            RpcDomainSampleRequests.Builder response = convertRequestData(dbRecords.getFirst());
+
+            responseObserver.onNext(response.build());
+            responseObserver.onCompleted();
+        }
+        catch (Exception e) {
+            logger.error("Error in getSample()", e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
+        }
+    }
+
+    @Override
+    public void hasSample(RpcDomainName request, StreamObserver<RpcBooleanRsp> responseObserver) {
+        String domainName = request.getDomainName();
+        if (domainName.isBlank()) {
+            responseObserver.onError(Status.INVALID_ARGUMENT
+                    .withDescription("Invalid domain name")
+                    .asRuntimeException());
+            return;
+        }
+
+        try {
+            responseObserver.onNext(RpcBooleanRsp.newBuilder()
+                    .setAnswer(domSampleDb.hasSample(domainName)).build());
+            responseObserver.onCompleted();
+        }
+        catch (Exception e) {
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
+        }
+    }
+
+    @Override
+    public void getAllSamples(RpcDomainName request, StreamObserver<RpcDomainSample> responseObserver) {
+        String domainName = request.getDomainName();
+        if (domainName.isBlank()) {
+            responseObserver.onError(Status.INVALID_ARGUMENT
+                    .withDescription("Invalid domain name")
+                    .asRuntimeException());
+            return;
+        }
+
+        try {
+            List<DomSampleDb.Sample> dbRecords = domSampleDb.getSamples(domainName);
+
+            for (var record : dbRecords) {
+                responseObserver.onNext(convertFullSample(record).build());
+            }
+
+            responseObserver.onCompleted();
+        }
+        catch (Exception e) {
+            logger.error("Error in getSample()", e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
+        }
+    }
+
+    private RpcDomainSample.Builder convertFullSample(DomSampleDb.Sample dbSample) {
+
+        ByteString htmlZstd = ByteString.copyFrom(Zstd.compress(dbSample.sample().getBytes(StandardCharsets.UTF_8)));
+
+        var sampleBuilder = RpcDomainSample.newBuilder()
+                .setDomainName(dbSample.domain())
+                .setAcceptedPopover(dbSample.acceptedPopover())
+                .setHtmlSampleZstd(htmlZstd);
+
+        for (var req : dbSample.parseRequests()) {
+            sampleBuilder.addOutgoingRequestsBuilder()
+                    .setUrl(req.uri().toString())
+                    .setMethod(switch (req.method().toUpperCase())
+                    {
+                        case "GET" -> RpcOutgoingRequest.RequestMethod.GET;
+                        case "POST" -> RpcOutgoingRequest.RequestMethod.POST;
+                        default -> RpcOutgoingRequest.RequestMethod.OTHER;
+                    })
+                    .setTimestamp(req.timestamp());
+        }
+
+        return sampleBuilder;
+    }
+
+    private RpcDomainSampleRequests.Builder convertRequestData(DomSampleDb.Sample dbSample) {
+
+        var sampleBuilder = RpcDomainSampleRequests.newBuilder()
+                .setDomainName(dbSample.domain());
+
+        for (var req : dbSample.parseRequests()) {
+            sampleBuilder.addOutgoingRequestsBuilder()
+                    .setUrl(req.uri().toString())
+                    .setMethod(switch (req.method().toUpperCase())
+                    {
+                        case "GET" -> RpcOutgoingRequest.RequestMethod.GET;
+                        case "POST" -> RpcOutgoingRequest.RequestMethod.POST;
+                        default -> RpcOutgoingRequest.RequestMethod.OTHER;
+                    })
+                    .setTimestamp(req.timestamp());
+        }
+
+        return sampleBuilder;
+    }
+}

code/functions/live-capture/java/nu/marginalia/domsample/db/DomSampleDb.java

@@ -1,17 +1,28 @@
 package nu.marginalia.domsample.db;
 
 import nu.marginalia.WmsaHome;
+import nu.marginalia.model.EdgeUrl;
+import org.apache.commons.lang3.StringUtils;
 import org.jsoup.Jsoup;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
+import java.net.URI;
+import java.net.URISyntaxException;
 import java.nio.file.Path;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.SQLException;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.function.Predicate;
 
 public class DomSampleDb implements AutoCloseable {
     private static final String dbFileName = "dom-sample.db";
     private final Connection connection;
+    private static final Logger logger = LoggerFactory.getLogger(DomSampleDb.class);
 
     public DomSampleDb() throws SQLException{
         this(WmsaHome.getDataPath().resolve(dbFileName));
@@ -88,14 +99,78 @@ public class DomSampleDb implements AutoCloseable {
     }
 
 
-    public record Sample(String url, String domain, String sample, String requests, boolean acceptedPopover) {}
+    public record Sample(String url, String domain, String sample, String requests, boolean acceptedPopover) {
+
+        public List<SampleRequest> parseRequests() {
+            List<SampleRequest> requests = new ArrayList<>();
+
+            // Request format is METHOD\tTIMESTAMP\tURI\n
+
+            for (var line : StringUtils.split(this.requests, '\n')) {
+                String[] parts = StringUtils.split(line, "\t", 3);
+                if (parts.length != 3) continue;
+
+                try {
+                    String method =  parts[0];
+                    long ts = Long.parseLong(parts[1]);
+                    String linkUrl = parts[2];
+
+                    URI uri = parseURI(linkUrl);
+
+                    requests.add(new SampleRequest(method, ts, uri));
+                }
+                catch (Exception e) {
+                    logger.warn("Failed to parse requests", e);
+                }
+            }
+
+            return requests;
+        }
+
+
+        private static URI parseURI(String uri) throws URISyntaxException {
+            try {
+                return new URI(uri);
+            }
+            catch (URISyntaxException ex) {
+                return new EdgeUrl(uri).asURI();
+            }
+        }
+    }
+
+    public record SampleRequest(String method, long timestamp, URI uri) {}
+
+    /**
+     * @param consumer - consume the sample, return true to continue consumption
+     * @throws SQLException
+     */
+    public void forEachSample(Predicate<Sample> consumer) throws SQLException {
+        try (var stmt = connection.prepareStatement("""
+                SELECT url, domain, sample, requests, accepted_popover
+                FROM samples
+                """))
+        {
+            var rs = stmt.executeQuery();
+            while (rs.next()) {
+                var sample = new Sample(
+                        rs.getString("url"),
+                        rs.getString("domain"),
+                        rs.getString("sample"),
+                        rs.getString("requests"),
+                        rs.getBoolean("accepted_popover")
+                );
+
+                if (!consumer.test(sample)) break;
+            }
+        }
+    }
 
     public List<Sample> getSamples(String domain) throws SQLException {
         List<Sample> samples = new ArrayList<>();
 
         try (var stmt = connection.prepareStatement("""
                 SELECT url, sample, requests, accepted_popover
-                FROM samples 
+                FROM samples
                 WHERE domain = ?
                 """))
         {
@@ -116,6 +191,21 @@ public class DomSampleDb implements AutoCloseable {
         return samples;
     }
 
+
+    public boolean hasSample(String domain) throws SQLException {
+
+        try (var stmt = connection.prepareStatement("""
+                SELECT 1
+                FROM samples
+                WHERE domain = ?
+                """))
+        {
+            stmt.setString(1, domain);
+            var rs = stmt.executeQuery();
+            return rs.next();
+        }
+    }
+
     public void saveSample(String domain, String url, String rawContent) throws SQLException {
         var doc = Jsoup.parse(rawContent);
 

code/functions/live-capture/java/nu/marginalia/rss/svc/FeedFetcherService.java

@@ -20,19 +20,36 @@ import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorage;
 import nu.marginalia.storage.model.FileStorageType;
 import nu.marginalia.util.SimpleBlockingThreadPool;
+import org.apache.hc.client5.http.ConnectionKeepAliveStrategy;
+import org.apache.hc.client5.http.classic.HttpClient;
+import org.apache.hc.client5.http.config.ConnectionConfig;
+import org.apache.hc.client5.http.config.RequestConfig;
+import org.apache.hc.client5.http.cookie.StandardCookieSpec;
+import org.apache.hc.client5.http.impl.classic.HttpClients;
+import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
+import org.apache.hc.core5.http.Header;
+import org.apache.hc.core5.http.HeaderElement;
+import org.apache.hc.core5.http.HeaderElements;
+import org.apache.hc.core5.http.HttpResponse;
+import org.apache.hc.core5.http.io.SocketConfig;
+import org.apache.hc.core5.http.io.entity.EntityUtils;
+import org.apache.hc.core5.http.io.support.ClassicRequestBuilder;
+import org.apache.hc.core5.http.message.MessageSupport;
+import org.apache.hc.core5.http.protocol.HttpContext;
+import org.apache.hc.core5.util.TimeValue;
+import org.apache.hc.core5.util.Timeout;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nullable;
-import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
-import java.net.http.HttpClient;
-import java.net.http.HttpRequest;
-import java.net.http.HttpResponse;
 import java.sql.SQLException;
-import java.time.*;
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.*;
 import java.util.concurrent.ExecutorService;
@@ -55,6 +72,8 @@ public class FeedFetcherService {
 
     private final DomainCoordinator domainCoordinator;
 
+    private final HttpClient httpClient;
+
     private volatile boolean updating;
 
     @Inject
@@ -71,6 +90,83 @@ public class FeedFetcherService {
         this.serviceHeartbeat = serviceHeartbeat;
         this.executorClient = executorClient;
         this.domainCoordinator = domainCoordinator;
+
+        final ConnectionConfig connectionConfig = ConnectionConfig.custom()
+                .setSocketTimeout(15, TimeUnit.SECONDS)
+                .setConnectTimeout(15, TimeUnit.SECONDS)
+                .setValidateAfterInactivity(TimeValue.ofSeconds(5))
+                .build();
+
+
+        var connectionManager = PoolingHttpClientConnectionManagerBuilder.create()
+                .setMaxConnPerRoute(2)
+                .setMaxConnTotal(50)
+                .setDefaultConnectionConfig(connectionConfig)
+                .build();
+
+        connectionManager.setDefaultSocketConfig(SocketConfig.custom()
+                .setSoLinger(TimeValue.ofSeconds(-1))
+                .setSoTimeout(Timeout.ofSeconds(10))
+                .build()
+        );
+
+        Thread.ofPlatform().daemon(true).start(() -> {
+            try {
+                for (;;) {
+                    TimeUnit.SECONDS.sleep(15);
+                    logger.info("Connection pool stats: {}", connectionManager.getTotalStats());
+                }
+            }
+            catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+            }
+        });
+
+        final RequestConfig defaultRequestConfig = RequestConfig.custom()
+                .setCookieSpec(StandardCookieSpec.IGNORE)
+                .setResponseTimeout(10, TimeUnit.SECONDS)
+                .setConnectionRequestTimeout(5, TimeUnit.MINUTES)
+                .build();
+
+        httpClient = HttpClients.custom()
+                .setDefaultRequestConfig(defaultRequestConfig)
+                .setConnectionManager(connectionManager)
+                .setUserAgent(WmsaHome.getUserAgent().uaIdentifier())
+                .setConnectionManager(connectionManager)
+                .setKeepAliveStrategy(new ConnectionKeepAliveStrategy() {
+                    // Default keep-alive duration is 3 minutes, but this is too long for us,
+                    // as we are either going to re-use it fairly quickly or close it for a long time.
+                    //
+                    // So we set it to 30 seconds or clamp the server-provided value to a minimum of 10 seconds.
+                    private static final TimeValue defaultValue = TimeValue.ofSeconds(30);
+
+                    @Override
+                    public TimeValue getKeepAliveDuration(HttpResponse response, HttpContext context) {
+                        final Iterator<HeaderElement> it = MessageSupport.iterate(response, HeaderElements.KEEP_ALIVE);
+
+                        while (it.hasNext()) {
+                            final HeaderElement he = it.next();
+                            final String param = he.getName();
+                            final String value = he.getValue();
+
+                            if (value == null)
+                                continue;
+                            if (!"timeout".equalsIgnoreCase(param))
+                                continue;
+
+                            try {
+                                long timeout = Long.parseLong(value);
+                                timeout = Math.clamp(timeout, 30, defaultValue.toSeconds());
+                                return TimeValue.ofSeconds(timeout);
+                            } catch (final NumberFormatException ignore) {
+                                break;
+                            }
+                        }
+                        return defaultValue;
+                    }
+                })
+                .build();
+
     }
 
     public enum UpdateMode {
@@ -86,13 +182,7 @@ public class FeedFetcherService {
 
 
         try (FeedDbWriter writer = feedDb.createWriter();
-             HttpClient client = HttpClient.newBuilder()
-                .connectTimeout(Duration.ofSeconds(15))
-                .executor(Executors.newCachedThreadPool())
-                .followRedirects(HttpClient.Redirect.NORMAL)
-                .version(HttpClient.Version.HTTP_2)
-                .build();
-             ExecutorService fetchExecutor = Executors.newCachedThreadPool();
+             ExecutorService fetchExecutor = Executors.newVirtualThreadPerTaskExecutor();
              FeedJournal feedJournal = FeedJournal.create();
              var heartbeat = serviceHeartbeat.createServiceAdHocTaskHeartbeat("Update Rss Feeds")
         ) {
@@ -137,7 +227,8 @@ public class FeedFetcherService {
 
                         FetchResult feedData;
                         try (DomainLock domainLock = domainCoordinator.lockDomain(new EdgeDomain(feed.domain()))) {
-                            feedData = fetchFeedData(feed, client, fetchExecutor, ifModifiedSinceDate, ifNoneMatchTag);
+                            feedData = fetchFeedData(feed, fetchExecutor, ifModifiedSinceDate, ifNoneMatchTag);
+                            TimeUnit.SECONDS.sleep(1); // Sleep before we yield the lock to avoid hammering the server from multiple processes
                         } catch (Exception ex) {
                             feedData = new FetchResult.TransientError();
                         }
@@ -216,7 +307,6 @@ public class FeedFetcherService {
     }
 
     private FetchResult fetchFeedData(FeedDefinition feed,
-                                      HttpClient client,
                                       ExecutorService executorService,
                                       @Nullable String ifModifiedSinceDate,
                                       @Nullable String ifNoneMatchTag)
@@ -224,59 +314,63 @@ public class FeedFetcherService {
         try {
             URI uri = new URI(feed.feedUrl());
 
-            HttpRequest.Builder requestBuilder = HttpRequest.newBuilder()
-                    .GET()
-                    .uri(uri)
-                    .header("User-Agent", WmsaHome.getUserAgent().uaIdentifier())
-                    .header("Accept-Encoding", "gzip")
-                    .header("Accept", "text/*, */*;q=0.9")
-                    .timeout(Duration.ofSeconds(15))
-                    ;
+            var requestBuilder = ClassicRequestBuilder.get(uri)
+                    .setHeader("User-Agent", WmsaHome.getUserAgent().uaIdentifier())
+                    .setHeader("Accept-Encoding", "gzip")
+                    .setHeader("Accept", "text/*, */*;q=0.9");
 
             // Set the If-Modified-Since or If-None-Match headers if we have them
             // though since there are certain idiosyncrasies in server implementations,
             // we avoid setting both at the same time as that may turn a 304 into a 200.
             if (ifNoneMatchTag != null) {
-                requestBuilder.header("If-None-Match", ifNoneMatchTag);
+                requestBuilder.addHeader("If-None-Match", ifNoneMatchTag);
             } else if (ifModifiedSinceDate != null) {
-                requestBuilder.header("If-Modified-Since", ifModifiedSinceDate);
+                requestBuilder.addHeader("If-Modified-Since", ifModifiedSinceDate);
             }
 
+            return httpClient.execute(requestBuilder.build(), rsp -> {
+                try {
+                    logger.info("Code: {}, URL: {}", rsp.getCode(), uri);
 
-            HttpRequest getRequest = requestBuilder.build();
+                    switch (rsp.getCode()) {
+                        case 200 -> {
+                            if (rsp.getEntity() == null) {
+                                return new FetchResult.TransientError(); // No content to read, treat as transient error
+                            }
+                            byte[] responseData = EntityUtils.toByteArray(rsp.getEntity());
 
-            for (int i = 0; i < 3; i++) {
+                            // Decode the response body based on the Content-Type header
+                            Header contentTypeHeader = rsp.getFirstHeader("Content-Type");
+                            if (contentTypeHeader == null) {
+                                return new FetchResult.TransientError();
+                            }
+                            String contentType = contentTypeHeader.getValue();
+                            String bodyText = DocumentBodyToString.getStringData(ContentType.parse(contentType), responseData);
 
-                /* Note we need to use an executor to time-limit the send() method in HttpClient, as
-                 * its support for timeouts only applies to the time until response starts to be received,
-                 * and does not catch the case when the server starts to send data but then hangs.
-                 */
-                HttpResponse<byte[]> rs = executorService.submit(
-                        () -> client.send(getRequest, HttpResponse.BodyHandlers.ofByteArray()))
-                                .get(15, TimeUnit.SECONDS);
+                            // Grab the ETag header if it exists
+                            Header etagHeader = rsp.getFirstHeader("ETag");
+                            String newEtagValue = etagHeader == null ? null : etagHeader.getValue();
 
-                if (rs.statusCode() == 429) { // Too Many Requests
-                    int retryAfter = Integer.parseInt(rs.headers().firstValue("Retry-After").orElse("2"));
-                    Thread.sleep(Duration.ofSeconds(Math.clamp(retryAfter, 1, 5)));
-                    continue;
-                }
-
-                String newEtagValue = rs.headers().firstValue("ETag").orElse("");
-
-                return switch (rs.statusCode()) {
-                    case 200 -> {
-                        byte[] responseData = getResponseData(rs);
-
-                        String contentType = rs.headers().firstValue("Content-Type").orElse("");
-                        String bodyText = DocumentBodyToString.getStringData(ContentType.parse(contentType), responseData);
-
-                        yield new FetchResult.Success(bodyText, newEtagValue);
+                            return new FetchResult.Success(bodyText, newEtagValue);
+                        }
+                        case 304 -> {
+                            return new FetchResult.NotModified(); // via If-Modified-Since semantics
+                        }
+                        case 404 -> {
+                            return new FetchResult.PermanentError(); // never try again
+                        }
+                        default -> {
+                            return new FetchResult.TransientError(); // we try again later
+                        }
                     }
-                    case 304 -> new FetchResult.NotModified(); // via If-Modified-Since semantics
-                    case 404 -> new FetchResult.PermanentError(); // never try again
-                    default -> new FetchResult.TransientError(); // we try again later
-                };
-            }
+                }
+                catch (Exception ex) {
+                    return new FetchResult.PermanentError(); // treat as permanent error
+                }
+                finally {
+                    EntityUtils.consumeQuietly(rsp.getEntity());
+                }
+            });
         }
         catch (Exception ex) {
             logger.debug("Error fetching feed", ex);
@@ -285,19 +379,6 @@ public class FeedFetcherService {
         return new FetchResult.TransientError();
     }
 
-    private byte[] getResponseData(HttpResponse<byte[]> response) throws IOException {
-        String encoding = response.headers().firstValue("Content-Encoding").orElse("");
-
-        if ("gzip".equals(encoding)) {
-            try (var stream = new GZIPInputStream(new ByteArrayInputStream(response.body()))) {
-                return stream.readAllBytes();
-            }
-        }
-        else {
-            return response.body();
-        }
-    }
-
     public sealed interface FetchResult {
         record Success(String value, String etag) implements FetchResult {}
         record NotModified() implements FetchResult {}

code/functions/live-capture/java/nu/marginalia/rss/svc/FeedsGrpcService.java

@@ -1,6 +1,7 @@
 package nu.marginalia.rss.svc;
 
 import com.google.inject.Inject;
+import io.grpc.Status;
 import io.grpc.stub.StreamObserver;
 import nu.marginalia.api.feeds.*;
 import nu.marginalia.db.DbDomainQueries;
@@ -69,7 +70,7 @@ public class FeedsGrpcService extends FeedApiGrpc.FeedApiImplBase implements Dis
     @Override
     public void getFeedDataHash(Empty request, StreamObserver<RpcFeedDataHash> responseObserver) {
         if (!feedDb.isEnabled()) {
-            responseObserver.onError(new IllegalStateException("Feed database is disabled on this node"));
+            responseObserver.onError(Status.INTERNAL.withDescription("Feed database is disabled on this node").asRuntimeException());
             return;
         }
 
@@ -80,7 +81,7 @@ public class FeedsGrpcService extends FeedApiGrpc.FeedApiImplBase implements Dis
         }
         catch (Exception e) {
             logger.error("Error getting feed data hash", e);
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -101,7 +102,7 @@ public class FeedsGrpcService extends FeedApiGrpc.FeedApiImplBase implements Dis
         }
         catch (Exception e) {
             logger.error("Error getting updated links", e);
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 
@@ -109,13 +110,13 @@ public class FeedsGrpcService extends FeedApiGrpc.FeedApiImplBase implements Dis
     public void getFeed(RpcDomainId request,
                         StreamObserver<RpcFeed> responseObserver) {
         if (!feedDb.isEnabled()) {
-            responseObserver.onError(new IllegalStateException("Feed database is disabled on this node"));
+            responseObserver.onError(Status.INTERNAL.withDescription("Feed database is disabled on this node").asRuntimeException());
             return;
         }
 
         Optional<EdgeDomain> domainName = domainQueries.getDomain(request.getDomainId());
         if (domainName.isEmpty()) {
-            responseObserver.onError(new IllegalArgumentException("Domain not found"));
+            responseObserver.onError(Status.NOT_FOUND.withDescription("Domain not found").asRuntimeException());
             return;
         }
 

code/functions/live-capture/test/nu/marginalia/rss/svc/FeedFetcherServiceTest.java

@@ -5,6 +5,8 @@ import com.google.inject.Guice;
 import com.google.inject.name.Names;
 import com.zaxxer.hikari.HikariConfig;
 import com.zaxxer.hikari.HikariDataSource;
+import nu.marginalia.coordination.DomainCoordinator;
+import nu.marginalia.coordination.LocalDomainCoordinator;
 import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.rss.db.FeedDb;
 import nu.marginalia.rss.model.FeedItems;
@@ -82,9 +84,10 @@ class FeedFetcherServiceTest extends AbstractModule {
     }
 
     public void configure() {
+        bind(DomainCoordinator.class).to(LocalDomainCoordinator.class);
         bind(HikariDataSource.class).toInstance(dataSource);
         bind(ServiceRegistryIf.class).toInstance(Mockito.mock(ServiceRegistryIf.class));
-        bind(ServiceConfiguration.class).toInstance(new ServiceConfiguration(ServiceId.Executor, 1, "", "", 0, UUID.randomUUID()));
+        bind(ServiceConfiguration.class).toInstance(new ServiceConfiguration(ServiceId.Index, 1, "", "", 0, UUID.randomUUID()));
         bind(Integer.class).annotatedWith(Names.named("wmsa-system-node")).toInstance(1);
     }
 

code/functions/math/api/java/nu/marginalia/api/math/MathClient.java

@@ -26,7 +26,9 @@ public class MathClient {
     private static final Logger logger = LoggerFactory.getLogger(MathClient.class);
 
     private final GrpcSingleNodeChannelPool<MathApiGrpc.MathApiBlockingStub> channelPool;
-    private final ExecutorService executor = Executors.newWorkStealingPool(8);
+
+    private static final boolean useLoom = Boolean.getBoolean("system.experimentalUseLoom");
+    private static final ExecutorService executor = useLoom ? Executors.newVirtualThreadPerTaskExecutor() : Executors.newWorkStealingPool(8);
 
     @Inject
     public MathClient(GrpcChannelPoolFactory factory) {

code/functions/search-query/api/java/nu/marginalia/api/searchquery/QueryProtobufCodec.java

@@ -304,7 +304,6 @@ public class QueryProtobufCodec {
                 IndexProtobufCodec.convertRpcQuery(specs.getQuery()),
                 specs.getDomainsList(),
                 specs.getSearchSetIdentifier(),
-                specs.getHumanQuery(),
                 IndexProtobufCodec.convertSpecLimit(specs.getQuality()),
                 IndexProtobufCodec.convertSpecLimit(specs.getYear()),
                 IndexProtobufCodec.convertSpecLimit(specs.getSize()),

code/functions/search-query/api/java/nu/marginalia/api/searchquery/model/query/SearchSpecification.java

@@ -18,8 +18,6 @@ public class SearchSpecification {
 
     public String searchSetIdentifier;
 
-    public final String humanQuery;
-
     public SpecificationLimit quality;
     public SpecificationLimit year;
     public SpecificationLimit size;
@@ -35,7 +33,6 @@ public class SearchSpecification {
     public SearchSpecification(SearchQuery query,
                                List<Integer> domains,
                                String searchSetIdentifier,
-                               String humanQuery,
                                SpecificationLimit quality,
                                SpecificationLimit year,
                                SpecificationLimit size,
@@ -47,7 +44,6 @@ public class SearchSpecification {
         this.query = query;
         this.domains = domains;
         this.searchSetIdentifier = searchSetIdentifier;
-        this.humanQuery = humanQuery;
         this.quality = quality;
         this.year = year;
         this.size = size;
@@ -73,10 +69,6 @@ public class SearchSpecification {
         return this.searchSetIdentifier;
     }
 
-    public String getHumanQuery() {
-        return this.humanQuery;
-    }
-
     public SpecificationLimit getQuality() {
         return this.quality;
     }
@@ -106,14 +98,13 @@ public class SearchSpecification {
     }
 
     public String toString() {
-        return "SearchSpecification(query=" + this.getQuery() + ", domains=" + this.getDomains() + ", searchSetIdentifier=" + this.getSearchSetIdentifier() + ", humanQuery=" + this.getHumanQuery() + ", quality=" + this.getQuality() + ", year=" + this.getYear() + ", size=" + this.getSize() + ", rank=" + this.getRank() + ", queryLimits=" + this.getQueryLimits() + ", queryStrategy=" + this.getQueryStrategy() + ", rankingParams=" + this.getRankingParams() + ")";
+        return "SearchSpecification(query=" + this.getQuery() + ", domains=" + this.getDomains() + ", searchSetIdentifier=" + this.getSearchSetIdentifier() + ", quality=" + this.getQuality() + ", year=" + this.getYear() + ", size=" + this.getSize() + ", rank=" + this.getRank() + ", queryLimits=" + this.getQueryLimits() + ", queryStrategy=" + this.getQueryStrategy() + ", rankingParams=" + this.getRankingParams() + ")";
     }
 
     public static class SearchSpecificationBuilder {
         private SearchQuery query;
         private List<Integer> domains;
         private String searchSetIdentifier;
-        private String humanQuery;
         private SpecificationLimit quality$value;
         private boolean quality$set;
         private SpecificationLimit year$value;
@@ -144,11 +135,6 @@ public class SearchSpecification {
             return this;
         }
 
-        public SearchSpecificationBuilder humanQuery(String humanQuery) {
-            this.humanQuery = humanQuery;
-            return this;
-        }
-
         public SearchSpecificationBuilder quality(SpecificationLimit quality) {
             this.quality$value = quality;
             this.quality$set = true;
@@ -205,11 +191,7 @@ public class SearchSpecification {
             if (!this.rank$set) {
                 rank$value = SpecificationLimit.none();
             }
-            return new SearchSpecification(this.query, this.domains, this.searchSetIdentifier, this.humanQuery, quality$value, year$value, size$value, rank$value, this.queryLimits, this.queryStrategy, this.rankingParams);
-        }
-
-        public String toString() {
-            return "SearchSpecification.SearchSpecificationBuilder(query=" + this.query + ", domains=" + this.domains + ", searchSetIdentifier=" + this.searchSetIdentifier + ", humanQuery=" + this.humanQuery + ", quality$value=" + this.quality$value + ", year$value=" + this.year$value + ", size$value=" + this.size$value + ", rank$value=" + this.rank$value + ", queryLimits=" + this.queryLimits + ", queryStrategy=" + this.queryStrategy + ", rankingParams=" + this.rankingParams + ")";
+            return new SearchSpecification(this.query, this.domains, this.searchSetIdentifier, quality$value, year$value, size$value, rank$value, this.queryLimits, this.queryStrategy, this.rankingParams);
         }
     }
 }

code/functions/search-query/api/java/nu/marginalia/api/searchquery/model/results/ResultRankingContext.java

@@ -1,56 +0,0 @@
-package nu.marginalia.api.searchquery.model.results;
-
-import nu.marginalia.api.searchquery.RpcResultRankingParameters;
-import nu.marginalia.api.searchquery.model.compiled.CqDataInt;
-
-import java.util.BitSet;
-
-public class ResultRankingContext {
-    private final int docCount;
-    public final RpcResultRankingParameters params;
-
-
-    public final BitSet regularMask;
-    public final BitSet ngramsMask;
-
-    /** CqDataInt associated with frequency information of the terms in the query
-     * in the full index.  The dataset is indexed by the compiled query. */
-    public final CqDataInt fullCounts;
-
-    /** CqDataInt associated with frequency information of the terms in the query
-     * in the full index.  The dataset is indexed by the compiled query. */
-    public final CqDataInt priorityCounts;
-
-    public ResultRankingContext(int docCount,
-                                RpcResultRankingParameters params,
-                                BitSet ngramsMask,
-                                BitSet regularMask,
-                                CqDataInt fullCounts,
-                                CqDataInt prioCounts)
-    {
-        this.docCount = docCount;
-        this.params = params;
-
-        this.ngramsMask = ngramsMask;
-        this.regularMask = regularMask;
-
-        this.fullCounts = fullCounts;
-        this.priorityCounts = prioCounts;
-    }
-
-    public int termFreqDocCount() {
-        return docCount;
-    }
-
-    @Override
-    public String toString() {
-        return "ResultRankingContext{" +
-                "docCount=" + docCount +
-                ", params=" + params +
-                ", regularMask=" + regularMask +
-                ", ngramsMask=" + ngramsMask +
-                ", fullCounts=" + fullCounts +
-                ", priorityCounts=" + priorityCounts +
-                '}';
-    }
-}

code/functions/search-query/java/nu/marginalia/functions/searchquery/QueryFactory.java

@@ -34,8 +34,6 @@ public class QueryFactory {
         this.queryExpansion = queryExpansion;
     }
 
-
-
     public ProcessedQuery createQuery(QueryParams params,
                                       @Nullable RpcResultRankingParameters rankingParams) {
         final var query = params.humanQuery();
@@ -153,7 +151,6 @@ public class QueryFactory {
 
         var specsBuilder = SearchSpecification.builder()
                 .query(queryBuilder.build())
-                .humanQuery(query)
                 .quality(qualityLimit)
                 .year(year)
                 .size(size)

code/functions/search-query/java/nu/marginalia/functions/searchquery/QueryGRPCService.java

@@ -3,6 +3,7 @@ package nu.marginalia.functions.searchquery;
 import com.google.common.collect.Lists;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
+import io.grpc.Status;
 import io.grpc.stub.StreamObserver;
 import io.prometheus.client.Histogram;
 import nu.marginalia.api.searchquery.*;
@@ -93,7 +94,7 @@ public class QueryGRPCService
             });
         } catch (Exception e) {
             logger.error("Exception", e);
-            responseObserver.onError(e);
+            responseObserver.onError(Status.INTERNAL.withCause(e).asRuntimeException());
         }
     }
 

code/functions/search-query/test/nu/marginalia/query/svc/QueryFactoryTest.java

@@ -241,7 +241,6 @@ public class QueryFactoryTest {
 
         Assertions.assertTrue(subquery.query.compiledQuery.contains(" bob "));
         Assertions.assertFalse(subquery.query.compiledQuery.contains(" bob's "));
-        Assertions.assertEquals("\"bob's cars\"", subquery.humanQuery);
     }
 
     @Test

code/index/api/java/nu/marginalia/index/api/IndexClient.java

@@ -38,7 +38,9 @@ public class IndexClient {
             .help("Count of results filtered by NSFW tier")
             .register();
 
-    private static final ExecutorService executor = Executors.newCachedThreadPool();
+
+    private static final boolean useLoom = Boolean.getBoolean("system.experimentalUseLoom");
+    private static final ExecutorService executor = useLoom ? Executors.newVirtualThreadPerTaskExecutor() : Executors.newCachedThreadPool();
 
     @Inject
     public IndexClient(GrpcChannelPoolFactory channelPoolFactory,

code/index/build.gradle

@@ -22,6 +22,7 @@ dependencies {
 
     implementation project(':code:libraries:array')
     implementation project(':code:libraries:btree')
+    implementation project(':code:libraries:skiplist')
     implementation project(':code:libraries:coded-sequence')
     implementation project(':code:libraries:language-processing')
 

code/index/index-forward/build.gradle

@@ -14,6 +14,7 @@ apply from: "$rootProject.projectDir/srcsets.gradle"
 
 dependencies {
     implementation project(':code:libraries:array')
+    implementation project(':code:libraries:native')
     implementation project(':code:libraries:btree')
     implementation project(':code:libraries:coded-sequence')
     implementation project(':code:libraries:language-processing')

code/index/index-forward/java/nu/marginalia/index/forward/ForwardIndexReader.java

@@ -1,9 +1,12 @@
 package nu.marginalia.index.forward;
 
+import it.unimi.dsi.fastutil.longs.Long2IntOpenHashMap;
 import nu.marginalia.array.LongArray;
 import nu.marginalia.array.LongArrayFactory;
+import nu.marginalia.ffi.LinuxSystemCalls;
 import nu.marginalia.index.forward.spans.DocumentSpans;
-import nu.marginalia.index.forward.spans.ForwardIndexSpansReader;
+import nu.marginalia.index.forward.spans.IndexSpansReader;
+import nu.marginalia.index.query.IndexSearchBudget;
 import nu.marginalia.model.id.UrlIdCodec;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -12,6 +15,7 @@ import java.io.IOException;
 import java.lang.foreign.Arena;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.concurrent.TimeoutException;
 
 import static nu.marginalia.index.forward.ForwardIndexParameters.*;
 
@@ -22,16 +26,15 @@ import static nu.marginalia.index.forward.ForwardIndexParameters.*;
  * and a mapping between document identifiers to the index into the
  * data array.
  * <p/>
- * Since the total data is relatively small, this is kept in memory to
- * reduce the amount of disk thrashing.
- * <p/>
  * The metadata is a binary encoding of {@see nu.marginalia.idx.DocumentMetadata}
  */
 public class ForwardIndexReader {
     private final LongArray ids;
     private final LongArray data;
 
-    private final ForwardIndexSpansReader spansReader;
+    private volatile Long2IntOpenHashMap idsMap;
+
+    private final IndexSpansReader spansReader;
 
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
@@ -64,7 +67,22 @@ public class ForwardIndexReader {
 
         ids = loadIds(idsFile);
         data = loadData(dataFile);
-        spansReader = new ForwardIndexSpansReader(spansFile);
+
+        LinuxSystemCalls.madviseRandom(data.getMemorySegment());
+        LinuxSystemCalls.madviseRandom(ids.getMemorySegment());
+
+        spansReader = IndexSpansReader.open(spansFile);
+
+        Thread.ofPlatform().start(this::createIdsMap);
+    }
+
+    private void createIdsMap() {
+        Long2IntOpenHashMap idsMap = new Long2IntOpenHashMap((int) ids.size());
+        for (int i = 0; i < ids.size(); i++) {
+            idsMap.put(ids.get(i), i);
+        }
+        this.idsMap = idsMap;
+        logger.info("Forward index loaded into RAM");
     }
 
     private static LongArray loadIds(Path idsFile) throws IOException {
@@ -106,7 +124,11 @@ public class ForwardIndexReader {
     private int idxForDoc(long docId) {
         assert UrlIdCodec.getRank(docId) == 0 : "Forward Index Reader fed dirty reverse index id";
 
-        long offset = ids.binarySearch(docId, 0, ids.size());
+        if (idsMap != null) {
+            return idsMap.getOrDefault(docId, -1);
+        }
+
+        long offset = ids.binarySearch2(docId, 0, ids.size());
 
         if (offset >= ids.size() || offset < 0 || ids.get(offset) != docId) {
             if (getClass().desiredAssertionStatus()) {
@@ -118,22 +140,27 @@ public class ForwardIndexReader {
         return (int) offset;
     }
 
-    public DocumentSpans getDocumentSpans(Arena arena, long docId) {
-        long offset = idxForDoc(docId);
-        if (offset < 0) return new DocumentSpans();
-
-        long encodedOffset = data.get(ENTRY_SIZE * offset + SPANS_OFFSET);
+    public DocumentSpans[] getDocumentSpans(Arena arena, IndexSearchBudget budget, long[] docIds) throws TimeoutException {
+        long[] offsets = new long[docIds.length];
+        for (int i = 0; i < docIds.length; i++) {
+            long offset = idxForDoc(docIds[i]);
+            if (offset >= 0) {
+                offsets[i] = data.get(ENTRY_SIZE * offset + SPANS_OFFSET);
+            }
+            else {
+                offsets[i] = -1;
+            }
+        }
 
         try {
-            return spansReader.readSpans(arena, encodedOffset);
+            return spansReader.readSpans(arena, budget, offsets);
         }
         catch (IOException ex) {
-            logger.error("Failed to read spans for doc " + docId, ex);
-            return new DocumentSpans();
+            logger.error("Failed to read spans for docIds", ex);
+            return new DocumentSpans[docIds.length];
         }
     }
 
-
     public int totalDocCount() {
         return (int) ids.size();
     }
@@ -141,6 +168,8 @@ public class ForwardIndexReader {
     public void close() {
         if (data != null)
             data.close();
+        if (ids != null)
+            ids.close();
     }
 
     public boolean isLoaded() {

code/index/index-forward/java/nu/marginalia/index/forward/construction/ForwardIndexConverter.java

@@ -5,7 +5,7 @@ import nu.marginalia.array.LongArray;
 import nu.marginalia.array.LongArrayFactory;
 import nu.marginalia.index.domainrankings.DomainRankings;
 import nu.marginalia.index.forward.ForwardIndexParameters;
-import nu.marginalia.index.forward.spans.ForwardIndexSpansWriter;
+import nu.marginalia.index.forward.spans.IndexSpansWriter;
 import nu.marginalia.index.journal.IndexJournal;
 import nu.marginalia.model.id.UrlIdCodec;
 import nu.marginalia.model.idx.DocumentMetadata;
@@ -65,7 +65,7 @@ public class ForwardIndexConverter {
         logger.info("Domain Rankings size = {}", domainRankings.size());
 
         try (var progress = heartbeat.createProcessTaskHeartbeat(TaskSteps.class, "forwardIndexConverter");
-             var spansWriter = new ForwardIndexSpansWriter(outputFileSpansData)
+             var spansWriter = new IndexSpansWriter(outputFileSpansData)
         ) {
             progress.progress(TaskSteps.GET_DOC_IDS);
 

code/index/index-forward/java/nu/marginalia/index/forward/spans/DocumentSpan.java

@@ -11,6 +11,9 @@ public class DocumentSpan {
     /** A list of the interlaced start and end positions of each span in the document of this type */
     private final IntList startsEnds;
 
+    public DocumentSpan(IntList startsEnds) {
+        this.startsEnds = startsEnds;
+    }
     public DocumentSpan(CodedSequence startsEnds) {
         this.startsEnds = startsEnds.values();
     }

code/index/index-forward/java/nu/marginalia/index/forward/spans/DocumentSpans.java

@@ -1,5 +1,6 @@
 package nu.marginalia.index.forward.spans;
 
+import it.unimi.dsi.fastutil.ints.IntList;
 import nu.marginalia.language.sentence.tag.HtmlTag;
 import nu.marginalia.sequence.CodedSequence;
 
@@ -39,6 +40,23 @@ public class DocumentSpans {
         return EMPTY_SPAN;
     }
 
+    void accept(byte code, IntList positions) {
+        if (code == HtmlTag.HEADING.code)
+            this.heading = new DocumentSpan(positions);
+        else if (code == HtmlTag.TITLE.code)
+            this.title = new DocumentSpan(positions);
+        else if (code == HtmlTag.NAV.code)
+            this.nav = new DocumentSpan(positions);
+        else if (code == HtmlTag.CODE.code)
+            this.code = new DocumentSpan(positions);
+        else if (code == HtmlTag.ANCHOR.code)
+            this.anchor = new DocumentSpan(positions);
+        else if (code == HtmlTag.EXTERNAL_LINKTEXT.code)
+            this.externalLinkText = new DocumentSpan(positions);
+        else if (code == HtmlTag.BODY.code)
+            this.body = new DocumentSpan(positions);
+    }
+
     void accept(byte code, CodedSequence positions) {
         if (code == HtmlTag.HEADING.code)
             this.heading = new DocumentSpan(positions);

code/index/index-forward/java/nu/marginalia/index/forward/spans/IndexSpansReader.java

@@ -0,0 +1,30 @@
+package nu.marginalia.index.forward.spans;
+
+import nu.marginalia.index.query.IndexSearchBudget;
+
+import java.io.IOException;
+import java.lang.foreign.Arena;
+import java.nio.file.Path;
+import java.util.concurrent.TimeoutException;
+
+public interface IndexSpansReader extends AutoCloseable {
+    @Deprecated
+    DocumentSpans readSpans(Arena arena, long encodedOffset) throws IOException;
+
+    DocumentSpans[] readSpans(Arena arena, IndexSearchBudget budget, long[] encodedOffsets) throws TimeoutException, IOException;
+
+    static IndexSpansReader open(Path fileName) throws IOException {
+        int version = SpansCodec.parseSpanFilesFooter(fileName);
+        if (version == SpansCodec.SpansCodecVersion.COMPRESSED.ordinal()) {
+            return new IndexSpansReaderCompressed(fileName);
+        }
+        else if (version == SpansCodec.SpansCodecVersion.PLAIN.ordinal()) {
+            return new IndexSpansReaderPlain(fileName);
+        }
+        else {
+            throw new IllegalArgumentException("Unsupported spans file version: " + version);
+        }
+    }
+
+    void close() throws IOException;
+}

code/index/index-forward/java/nu/marginalia/index/forward/spans/IndexSpansReaderCompressed.java

@@ -1,5 +1,6 @@
 package nu.marginalia.index.forward.spans;
 
+import nu.marginalia.index.query.IndexSearchBudget;
 import nu.marginalia.sequence.VarintCodedSequence;
 
 import java.io.IOException;
@@ -10,11 +11,11 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
 
-@SuppressWarnings("preview")
-public class ForwardIndexSpansReader implements AutoCloseable {
+@Deprecated
+public class IndexSpansReaderCompressed implements AutoCloseable, IndexSpansReader {
     private final FileChannel spansFileChannel;
 
-    public ForwardIndexSpansReader(Path spansFile) throws IOException {
+    public IndexSpansReaderCompressed(Path spansFile) throws IOException {
         this.spansFileChannel = (FileChannel) Files.newByteChannel(spansFile, StandardOpenOption.READ);
     }
 
@@ -51,6 +52,17 @@ public class ForwardIndexSpansReader implements AutoCloseable {
         return ret;
     }
 
+    @Override
+    public DocumentSpans[] readSpans(Arena arena, IndexSearchBudget budget, long[] encodedOffsets) throws IOException {
+        DocumentSpans[] ret = new DocumentSpans[encodedOffsets.length];
+        for (int i = 0; i < encodedOffsets.length; i++) {
+            if (encodedOffsets[i] >= 0) {
+                ret[i] = readSpans(arena, encodedOffsets[i]);
+            }
+        }
+        return ret;
+    }
+
     @Override
     public void close() throws IOException {
         spansFileChannel.close();

code/index/index-forward/java/nu/marginalia/index/forward/spans/IndexSpansReaderPlain.java

@@ -0,0 +1,112 @@
+package nu.marginalia.index.forward.spans;
+
+import it.unimi.dsi.fastutil.ints.IntArrayList;
+import nu.marginalia.index.query.IndexSearchBudget;
+import nu.marginalia.uring.UringFileReader;
+
+import java.io.IOException;
+import java.lang.foreign.Arena;
+import java.lang.foreign.MemorySegment;
+import java.lang.foreign.ValueLayout;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.concurrent.TimeoutException;
+
+public class IndexSpansReaderPlain implements IndexSpansReader {
+    private final UringFileReader uringReader;
+
+    public IndexSpansReaderPlain(Path spansFile) throws IOException {
+        if (Boolean.getBoolean("index.directModePositionsSpans")) {
+            if ((Files.size(spansFile) & 4095) != 0) {
+                throw new IllegalArgumentException("Spans file is not block aligned in size: " + Files.size(spansFile));
+            }
+
+            uringReader = new UringFileReader(spansFile,  true);
+        }
+        else {
+            uringReader = new UringFileReader(spansFile,  false);
+            uringReader.fadviseWillneed();
+        }
+
+    }
+
+    @Override
+    public DocumentSpans readSpans(Arena arena, long encodedOffset) throws IOException {
+        // for testing, slow
+        try {
+            return readSpans(arena, new IndexSearchBudget(1000), new long[] { encodedOffset})[0];
+        } catch (TimeoutException e) {
+            throw new IOException(e);
+        }
+    }
+
+    public DocumentSpans decode(MemorySegment ms) {
+        int count = ms.get(ValueLayout.JAVA_INT, 0);
+        int pos = 4;
+        DocumentSpans ret = new DocumentSpans();
+
+        // Decode each span
+        for (int spanIdx = 0; spanIdx < count; spanIdx++) {
+            byte code = ms.get(ValueLayout.JAVA_BYTE, pos);
+            short len = ms.get(ValueLayout.JAVA_SHORT, pos+2);
+
+            IntArrayList values = new IntArrayList(len);
+
+            pos += 4;
+            for (int i = 0; i < len; i++) {
+                values.add(ms.get(ValueLayout.JAVA_INT, pos + 4*i));
+            }
+            ret.accept(code, values);
+            pos += 4*len;
+        }
+
+        return ret;
+    }
+
+    @Override
+    public DocumentSpans[] readSpans(Arena arena, IndexSearchBudget budget, long[] encodedOffsets) throws TimeoutException {
+
+        int readCnt = 0;
+        for (long offset : encodedOffsets) {
+            if (offset < 0)
+                continue;
+            readCnt ++;
+        }
+
+        if (readCnt == 0) {
+            return new DocumentSpans[encodedOffsets.length];
+        }
+
+        long[] offsets = new long[readCnt];
+        int[] sizes = new int[readCnt];
+
+        for (int idx = 0, j = 0; idx < encodedOffsets.length; idx++) {
+            if (encodedOffsets[idx] < 0)
+                continue;
+            long offset = encodedOffsets[idx];
+
+            offsets[j] = SpansCodec.decodeStartOffset(offset);
+            sizes[j] = SpansCodec.decodeSize(offset);
+            j++;
+        }
+
+        List<MemorySegment> buffers = uringReader.readUnaligned(arena, budget.timeLeft(), offsets, sizes, 4096);
+
+        DocumentSpans[] ret = new DocumentSpans[encodedOffsets.length];
+
+        for (int idx = 0, j = 0; idx < encodedOffsets.length; idx++) {
+            if (encodedOffsets[idx] < 0)
+                continue;
+            ret[idx] = decode(buffers.get(j++));
+        }
+
+        return ret;
+    }
+
+    @Override
+    public void close() throws IOException {
+        uringReader.close();
+    }
+
+}

code/index/index-forward/java/nu/marginalia/index/forward/spans/IndexSpansWriter.java

@@ -1,20 +1,23 @@
 package nu.marginalia.index.forward.spans;
 
+import nu.marginalia.sequence.VarintCodedSequence;
+
 import java.io.IOException;
 import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
 import java.nio.channels.FileChannel;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
 
-public class ForwardIndexSpansWriter implements AutoCloseable {
+public class IndexSpansWriter implements AutoCloseable {
     private final FileChannel outputChannel;
-    private final ByteBuffer work = ByteBuffer.allocate(32);
+    private final ByteBuffer work = ByteBuffer.allocate(4*1024*1024).order(ByteOrder.nativeOrder());
 
     private long stateStartOffset = -1;
     private int stateLength = -1;
 
-    public ForwardIndexSpansWriter(Path outputFileSpansData) throws IOException {
+    public IndexSpansWriter(Path outputFileSpansData) throws IOException {
         this.outputChannel = (FileChannel) Files.newByteChannel(outputFileSpansData, StandardOpenOption.READ, StandardOpenOption.WRITE, StandardOpenOption.CREATE);
     }
 
@@ -23,7 +26,7 @@ public class ForwardIndexSpansWriter implements AutoCloseable {
         stateLength = 0;
 
         work.clear();
-        work.put((byte) count);
+        work.putInt(count);
         work.flip();
 
         while (work.hasRemaining())
@@ -33,12 +36,17 @@ public class ForwardIndexSpansWriter implements AutoCloseable {
     public void writeSpan(byte spanCode, ByteBuffer sequenceData) throws IOException {
         work.clear();
         work.put(spanCode);
-        work.putShort((short) sequenceData.remaining());
+        work.put((byte) 0); // Ensure we're byte aligned
+        var sequence = new VarintCodedSequence(sequenceData);
+        work.putShort((short) sequence.valueCount());
+
+        var iter = sequence.iterator();
+        while (iter.hasNext()) {
+            work.putInt(iter.nextInt());
+        }
         work.flip();
 
-        while (work.hasRemaining() || sequenceData.hasRemaining()) {
-            stateLength += (int) outputChannel.write(new ByteBuffer[]{work, sequenceData});
-        }
+        stateLength += outputChannel.write(work);
     }
 
     public long endRecord() {
@@ -47,6 +55,11 @@ public class ForwardIndexSpansWriter implements AutoCloseable {
 
     @Override
     public void close() throws IOException {
+        ByteBuffer footer = SpansCodec.createSpanFilesFooter(SpansCodec.SpansCodecVersion.PLAIN, (int) (4096 - (outputChannel.position() & 4095)));
+        outputChannel.position(outputChannel.size());
+        while (footer.hasRemaining()) {
+            outputChannel.write(footer, outputChannel.size());
+        }
         outputChannel.close();
     }
 }

code/index/index-forward/java/nu/marginalia/index/forward/spans/SpansCodec.java

@@ -1,6 +1,21 @@
 package nu.marginalia.index.forward.spans;
 
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+
 public class SpansCodec {
+    public static int MAGIC_INT = 0xF000F000;
+    public static int FOOTER_SIZE = 8;
+
+    public enum SpansCodecVersion {
+        @Deprecated
+        COMPRESSED,
+        PLAIN
+    }
+
     public static long encode(long startOffset, long size) {
         assert size < 0x1000_0000L : "Size must be less than 2^28";
 
@@ -11,7 +26,39 @@ public class SpansCodec {
         return encoded >>> 28;
     }
 
-    public static long decodeSize(long encoded) {
-        return encoded & 0x0FFF_FFFFL;
+    public static int decodeSize(long encoded) {
+        return (int) (encoded & 0x0FFF_FFFFL);
+    }
+
+    public static ByteBuffer createSpanFilesFooter(SpansCodecVersion version, int padSize) {
+        if (padSize < FOOTER_SIZE) {
+            padSize += 4096;
+        }
+
+        ByteBuffer footer = ByteBuffer.allocate(padSize);
+        footer.position(padSize - FOOTER_SIZE);
+        footer.putInt(SpansCodec.MAGIC_INT);
+        footer.put((byte) version.ordinal());
+        footer.put((byte) 0);
+        footer.put((byte) 0);
+        footer.put((byte) 0);
+        footer.flip();
+        return footer;
+    }
+
+    public static int parseSpanFilesFooter(Path spansFile) throws IOException {
+        ByteBuffer buffer = ByteBuffer.allocate(FOOTER_SIZE);
+
+        try (var fc = FileChannel.open(spansFile, StandardOpenOption.READ)) {
+            if (fc.size() < FOOTER_SIZE) return 0;
+            fc.read(buffer, fc.size() - buffer.capacity());
+            buffer.flip();
+            int magic = buffer.getInt();
+            if (magic != MAGIC_INT) {
+                return 0;
+            }
+            return buffer.get();
+        }
+
     }
 }

code/index/index-forward/test/nu/marginalia/index/forward/IndexSpansReaderTest.java

@@ -1,8 +1,9 @@
 package nu.marginalia.index.forward;
 
 import it.unimi.dsi.fastutil.ints.IntList;
-import nu.marginalia.index.forward.spans.ForwardIndexSpansReader;
-import nu.marginalia.index.forward.spans.ForwardIndexSpansWriter;
+import nu.marginalia.index.forward.spans.IndexSpansReader;
+import nu.marginalia.index.forward.spans.IndexSpansReaderPlain;
+import nu.marginalia.index.forward.spans.IndexSpansWriter;
 import nu.marginalia.language.sentence.tag.HtmlTag;
 import nu.marginalia.sequence.VarintCodedSequence;
 import org.junit.jupiter.api.AfterEach;
@@ -17,10 +18,10 @@ import java.nio.file.Path;
 
 import static org.junit.jupiter.api.Assertions.*;
 
-class ForwardIndexSpansReaderTest {
+class IndexSpansReaderTest {
     Path testFile = Files.createTempFile("test", ".idx");
 
-    ForwardIndexSpansReaderTest() throws IOException {
+    IndexSpansReaderTest() throws IOException {
     }
 
     @AfterEach
@@ -34,7 +35,7 @@ class ForwardIndexSpansReaderTest {
 
         long offset1;
         long offset2;
-        try (var writer = new ForwardIndexSpansWriter(testFile)) {
+        try (var writer = new IndexSpansWriter(testFile)) {
             writer.beginRecord(1);
             writer.writeSpan(HtmlTag.HEADING.code, VarintCodedSequence.generate(1, 3, 5, 8).buffer());
             offset1 = writer.endRecord();
@@ -46,7 +47,7 @@ class ForwardIndexSpansReaderTest {
             offset2 = writer.endRecord();
         }
 
-        try (var reader = new ForwardIndexSpansReader(testFile);
+        try (var reader = IndexSpansReader.open(testFile);
              var arena = Arena.ofConfined()
         ) {
             var spans1 = reader.readSpans(arena, offset1);
@@ -77,13 +78,13 @@ class ForwardIndexSpansReaderTest {
     @Test
     void testContainsRange() throws IOException {
         long offset1;
-        try (var writer = new ForwardIndexSpansWriter(testFile)) {
+        try (var writer = new IndexSpansWriter(testFile)) {
             writer.beginRecord(1);
             writer.writeSpan(HtmlTag.HEADING.code, VarintCodedSequence.generate( 1, 2, 10, 15, 20, 25).buffer());
             offset1 = writer.endRecord();
         }
 
-        try (var reader = new ForwardIndexSpansReader(testFile);
+        try (var reader = new IndexSpansReaderPlain(testFile);
              var arena = Arena.ofConfined()
         ) {
             var spans1 = reader.readSpans(arena, offset1);
@@ -104,13 +105,13 @@ class ForwardIndexSpansReaderTest {
     @Test
     void testContainsRangeExact() throws IOException {
         long offset1;
-        try (var writer = new ForwardIndexSpansWriter(testFile)) {
+        try (var writer = new IndexSpansWriter(testFile)) {
             writer.beginRecord(1);
             writer.writeSpan(HtmlTag.HEADING.code, VarintCodedSequence.generate( 1, 2, 10, 15, 20, 25).buffer());
             offset1 = writer.endRecord();
         }
 
-        try (var reader = new ForwardIndexSpansReader(testFile);
+        try (var reader = new IndexSpansReaderPlain(testFile);
              var arena = Arena.ofConfined()
         ) {
             var spans1 = reader.readSpans(arena, offset1);
@@ -131,13 +132,13 @@ class ForwardIndexSpansReaderTest {
     @Test
     void testCountRangeMatches() throws IOException {
         long offset1;
-        try (var writer = new ForwardIndexSpansWriter(testFile)) {
+        try (var writer = new IndexSpansWriter(testFile)) {
             writer.beginRecord(1);
             writer.writeSpan(HtmlTag.HEADING.code, VarintCodedSequence.generate( 1, 2, 10, 15, 20, 25).buffer());
             offset1 = writer.endRecord();
         }
 
-        try (var reader = new ForwardIndexSpansReader(testFile);
+        try (var reader = new IndexSpansReaderPlain(testFile);
              var arena = Arena.ofConfined()
         ) {
             var spans1 = reader.readSpans(arena, offset1);

code/index/index-perftest/build.gradle

@@ -0,0 +1,54 @@
+plugins {
+    id 'java'
+    id 'application'
+    id 'jvm-test-suite'
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(rootProject.ext.jvmVersion))
+    }
+}
+
+application {
+    mainClass = 'nu.marginalia.index.perftest.PerfTestMain'
+}
+
+apply from: "$rootProject.projectDir/srcsets.gradle"
+
+dependencies {
+    implementation project(':code:common:config')
+    implementation project(':code:common:db')
+
+    implementation project(':code:libraries:array')
+    implementation project(':code:libraries:native')
+    implementation project(':code:libraries:btree')
+    implementation project(':code:libraries:term-frequency-dict')
+    implementation project(':code:common:linkdb')
+    implementation project(':code:index')
+    implementation project(':code:index:query')
+    implementation project(':code:index:index-forward')
+    implementation project(':code:index:index-reverse')
+    implementation project(':third-party:commons-codec')
+    implementation project(':code:functions:search-query')
+    implementation project(':code:functions:search-query:api')
+
+    implementation libs.slop
+    implementation libs.roaringbitmap
+    implementation libs.bundles.slf4j
+    implementation libs.guava
+
+    libs.bundles.grpc.get().each {
+        implementation dependencies.create(it) {
+            exclude group: 'com.google.guava'
+        }
+    }
+
+
+    implementation libs.notnull
+    implementation libs.trove
+    implementation libs.fastutil
+    implementation libs.bundles.gson
+    implementation libs.bundles.mariadb
+
+}

code/index/index-perftest/java/nu/marginalia/index/perftest/IoPatternsMain.java

@@ -0,0 +1,262 @@
+package nu.marginalia.index.perftest;
+
+import nu.marginalia.ffi.LinuxSystemCalls;
+import nu.marginalia.uring.UringFileReader;
+
+import java.io.IOException;
+import java.lang.foreign.Arena;
+import java.lang.foreign.MemorySegment;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Random;
+import java.util.stream.LongStream;
+
+public class IoPatternsMain {
+
+    static void testBuffered(int sz, int small, int large, int iters) {
+        try {
+            Path largeFile = Path.of("/home/vlofgren/largefile.dat");
+            long fileSize = Files.size(largeFile);
+
+            Random r = new Random();
+            List<MemorySegment> segments = new ArrayList<>();
+            for (int i = 0; i < sz; i++) {
+                if (small == large) {
+                    segments.add(Arena.ofAuto().allocate(small));
+                }
+                else {
+                    segments.add(Arena.ofAuto().allocate(r.nextInt(small, large)));
+                }
+            }
+            List<Long> offsets = new ArrayList<>();
+
+            long[] samples = new long[1000];
+            int si = 0;
+
+            try (UringFileReader reader = new UringFileReader(largeFile, false)) {
+                for (int iter = 0; iter < iters; ) {
+                    if (si == samples.length) {
+                        Arrays.sort(samples);
+                        double p1 = samples[10] / 1_000.;
+                        double p10 = samples[100] / 1_000.;
+                        double p90 = samples[900] / 1_000.;
+                        double p99 = samples[990] / 1_000.;
+                        double avg = LongStream.of(samples).average().getAsDouble() / 1000.;
+                        System.out.println("B"+"\t"+avg+"\t"+p1 + " " + p10 + " " + p90 + " " + p99);
+                        si = 0;
+                        iter++;
+                    }
+
+                    offsets.clear();
+                    for (int i = 0; i < sz; i++) {
+                        offsets.add(r.nextLong(0, fileSize - 256));
+                    }
+
+                    long st = System.nanoTime();
+                    reader.read(segments, offsets);
+                    long et = System.nanoTime();
+
+                    samples[si++] = et - st;
+
+                }
+
+            }
+        }
+        catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    static void testBufferedPread(int sz, int iters) {
+        try {
+            Path largeFile = Path.of("/home/vlofgren/largefile.dat");
+            long fileSize = Files.size(largeFile);
+
+            Random r = new Random();
+            List<MemorySegment> segments = new ArrayList<>();
+            for (int i = 0; i < sz; i++) {
+                segments.add(Arena.ofAuto().allocate(r.nextInt(24, 256)));
+            }
+            List<Long> offsets = new ArrayList<>();
+
+            long[] samples = new long[1000];
+            int si = 0;
+
+            int fd = -1;
+            try {
+                fd = LinuxSystemCalls.openBuffered(largeFile);
+                LinuxSystemCalls.fadviseRandom(fd);
+
+                for (int iter = 0; iter < iters; ) {
+                    if (si == samples.length) {
+                        Arrays.sort(samples);
+                        double p1 = samples[10] / 1_000.;
+                        double p10 = samples[100] / 1_000.;
+                        double p90 = samples[900] / 1_000.;
+                        double p99 = samples[990] / 1_000.;
+                        double avg = LongStream.of(samples).average().getAsDouble() / 1000.;
+                        System.out.println("BP"+"\t"+avg+"\t"+p1 + " " + p10 + " " + p90 + " " + p99);
+                        si = 0;
+                        iter++;
+                    }
+
+                    offsets.clear();
+                    for (int i = 0; i < sz; i++) {
+                        offsets.add(r.nextLong(0, fileSize - 256));
+                    }
+
+                    long st = System.nanoTime();
+                    for (int i = 0; i < sz; i++) {
+                        LinuxSystemCalls.readAt(fd, segments.get(i), offsets.get(i));
+                    }
+                    long et = System.nanoTime();
+
+                    samples[si++] = et - st;
+                }
+            }
+            finally {
+                LinuxSystemCalls.closeFd(fd);
+            }
+        }
+        catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+
+    static void testDirect(int blockSize, int sz, int iters) {
+        try {
+            Path largeFile = Path.of("/home/vlofgren/largefile.dat");
+            int fileSizeBlocks = (int) ((Files.size(largeFile) & -blockSize) / blockSize);
+
+            Random r = new Random();
+            List<MemorySegment> segments = new ArrayList<>();
+            for (int i = 0; i < sz; i++) {
+                segments.add(Arena.ofAuto().allocate(blockSize, blockSize));
+            }
+            List<Long> offsets = new ArrayList<>();
+
+            long[] samples = new long[1000];
+            int si = 0;
+
+            try (UringFileReader reader = new UringFileReader(largeFile, true)) {
+                for (int iter = 0; iter < iters; ) {
+                    if (si == samples.length) {
+                        Arrays.sort(samples);
+                        double p1 = samples[10] / 1_000.;
+                        double p10 = samples[100] / 1_000.;
+                        double p90 = samples[900] / 1_000.;
+                        double p99 = samples[990] / 1_000.;
+                        double avg = LongStream.of(samples).average().getAsDouble() / 1000.;
+                        System.out.println("DN"+blockSize+"\t"+avg+"\t"+p1 + " " + p10 + " " + p90 + " " + p99);
+                        si = 0;
+                        iters++;
+                    }
+
+                    offsets.clear();
+                    for (int i = 0; i < sz; i++) {
+                        offsets.add(blockSize * r.nextLong(0, fileSizeBlocks));
+                    }
+
+                    long st = System.nanoTime();
+                    reader.read(segments, offsets);
+                    long et = System.nanoTime();
+
+                    samples[si++] = et - st;
+
+                }
+
+            }
+        }
+        catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+
+    static void testDirect1(int blockSize, int iters) {
+        try {
+            Path largeFile = Path.of("/home/vlofgren/largefile.dat");
+            int fileSizeBlocks = (int) ((Files.size(largeFile) & -blockSize) / blockSize);
+
+            Random r = new Random();
+            MemorySegment segment = Arena.global().allocate(blockSize, blockSize);
+
+            long[] samples = new long[1000];
+            int si = 0;
+
+            int fd = LinuxSystemCalls.openDirect(largeFile);
+            if (fd < 0) {
+                throw new IOException("open failed");
+            }
+            try {
+                for (int iter = 0; iter < iters; ) {
+                    if (si == samples.length) {
+                        Arrays.sort(samples);
+                        double p1 = samples[10] / 1_000.;
+                        double p10 = samples[100] / 1_000.;
+                        double p90 = samples[900] / 1_000.;
+                        double p99 = samples[990] / 1_000.;
+                        double avg = LongStream.of(samples).average().getAsDouble() / 1000.;
+                        System.out.println("D1"+blockSize+"\t"+avg+"\t"+p1 + " " + p10 + " " + p90 + " " + p99);
+                        si = 0;
+                        iters++;
+                    }
+
+
+                    long st = System.nanoTime();
+                    int ret;
+                    long readOffset = blockSize * r.nextLong(0, fileSizeBlocks);
+                    if (blockSize != (ret = LinuxSystemCalls.readAt(fd, segment, readOffset))) {
+                        throw new IOException("pread failed: " + ret);
+                    }
+                    long et = System.nanoTime();
+
+                    samples[si++] = et - st;
+
+                }
+
+            }
+            finally {
+                LinuxSystemCalls.closeFd(fd);
+            }
+        }
+        catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+//        Thread.ofPlatform().start(() -> testBuffered(128,  32, 65536,1000));
+        Thread.ofPlatform().start(() -> testDirect(8192*4, 128,1000));
+//        Thread.ofPlatform().start(() -> testBuffered(128, 1000));
+//        Thread.ofPlatform().start(() -> testBuffered(128, 1000));
+//        Thread.ofPlatform().start(() -> testBuffered(128, 1000));
+//        Thread.ofPlatform().start(() -> testBufferedPread(128, 1000));
+
+//        Thread.ofPlatform().start(() -> testDirect1(1024, 1000));
+//        Thread.ofPlatform().start(() -> testDirect1(1024, 1000));
+//        Thread.ofPlatform().start(() -> testDirect1(1024, 1000));
+//        Thread.ofPlatform().start(() -> testDirect1(1024*1024, 1000));
+//        Thread.ofPlatform().start(() -> testDirect1(1024*1024, 1000));
+//        Thread.ofPlatform().start(() -> testDirect(512, 512,1000));
+//        Thread.ofPlatform().start(() -> testDirect(512, 512,1000));
+//        Thread.ofPlatform().start(() -> testDirect(512, 512,1000));
+//        Thread.ofPlatform().start(() -> testDirect(512, 100));
+//        Thread.ofPlatform().start(() -> testDirect(512, 100));
+//        Thread.ofPlatform().start(() -> testDirect(512, 100));
+//        Thread.ofPlatform().start(() -> testDirect(512, 100));
+//        Thread.ofPlatform().start(() -> testBuffered(512, 1000));
+//        Thread.ofPlatform().start(() -> testBuffered(512, 1000));
+//        Thread.ofPlatform().start(() -> testBuffered(512, 1000));
+//        Thread.ofPlatform().start(() -> testBuffered(512, 1000));
+//        Thread.ofPlatform().start(() -> testBuffered(100));
+//        Thread.ofPlatform().start(() -> testBuffered(100));
+
+        for (;;);
+//        testBuffered(100);
+    }
+}

code/index/index-perftest/java/nu/marginalia/index/perftest/PerfTestMain.java

@@ -0,0 +1,313 @@
+package nu.marginalia.index.perftest;
+
+import gnu.trove.list.array.TLongArrayList;
+import nu.marginalia.api.searchquery.RpcQueryLimits;
+import nu.marginalia.api.searchquery.model.query.NsfwFilterTier;
+import nu.marginalia.api.searchquery.model.query.QueryParams;
+import nu.marginalia.api.searchquery.model.query.SearchSpecification;
+import nu.marginalia.api.searchquery.model.results.PrototypeRankingParameters;
+import nu.marginalia.array.page.LongQueryBuffer;
+import nu.marginalia.functions.searchquery.QueryFactory;
+import nu.marginalia.functions.searchquery.query_parser.QueryExpansion;
+import nu.marginalia.index.FullReverseIndexReader;
+import nu.marginalia.index.IndexQueryExecution;
+import nu.marginalia.index.PrioReverseIndexReader;
+import nu.marginalia.index.forward.ForwardIndexReader;
+import nu.marginalia.index.index.CombinedIndexReader;
+import nu.marginalia.index.index.StatefulIndex;
+import nu.marginalia.index.model.ResultRankingContext;
+import nu.marginalia.index.model.SearchParameters;
+import nu.marginalia.index.model.SearchTerms;
+import nu.marginalia.index.positions.PositionsFileReader;
+import nu.marginalia.index.query.IndexQuery;
+import nu.marginalia.index.query.IndexSearchBudget;
+import nu.marginalia.index.results.DomainRankingOverrides;
+import nu.marginalia.index.results.IndexResultRankingService;
+import nu.marginalia.index.results.model.ids.CombinedDocIdList;
+import nu.marginalia.index.searchset.SearchSetAny;
+import nu.marginalia.linkdb.docs.DocumentDbReader;
+import nu.marginalia.segmentation.NgramLexicon;
+import nu.marginalia.term_frequency_dict.TermFrequencyDict;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.sql.SQLException;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.TimeoutException;
+
+public class PerfTestMain {
+    static Duration warmupTime = Duration.ofMinutes(1);
+    static Duration runTime = Duration.ofMinutes(10);
+
+    public static void main(String[] args) {
+        if (args.length != 4) {
+            System.err.println("Arguments: home-dir index-dir query");
+            System.exit(255);
+        }
+
+        try {
+            Path indexDir = Paths.get(args[0]);
+            if (!Files.isDirectory(indexDir)) {
+                System.err.println("Index directory is not a directory");
+                System.exit(255);
+            }
+            Path homeDir = Paths.get(args[1]);
+            String scenario = args[2];
+            String query = args[3];
+
+            switch (scenario) {
+                case "valuation" -> runValuation(indexDir, homeDir, query);
+                case "lookup" -> runLookup(indexDir, homeDir, query);
+                case "execution" -> runExecution(indexDir, homeDir, query);
+            }
+
+            System.exit(0);
+        }
+        catch (NumberFormatException e) {
+            System.err.println("Arguments: data-dir index-dir query");
+            System.exit(255);
+        }
+        catch (Exception ex) {
+            System.err.println("Error during testing");
+            ex.printStackTrace();
+            System.exit(255);
+        }
+        System.out.println(Arrays.toString(args));
+    }
+
+    private static CombinedIndexReader createCombinedIndexReader(Path indexDir) throws IOException {
+
+        return new CombinedIndexReader(
+                new ForwardIndexReader(
+                        indexDir.resolve("ir/fwd-doc-id.dat"),
+                        indexDir.resolve("ir/fwd-doc-data.dat"),
+                        indexDir.resolve("ir/fwd-spans.dat")
+                ),
+                new FullReverseIndexReader(
+                        "full",
+                        indexDir.resolve("ir/rev-words.dat"),
+                        indexDir.resolve("ir/rev-docs.dat"),
+                        new PositionsFileReader(indexDir.resolve("ir/rev-positions.dat"))
+                ),
+                new PrioReverseIndexReader(
+                        "prio",
+                        indexDir.resolve("ir/rev-prio-words.dat"),
+                        indexDir.resolve("ir/rev-prio-docs.dat")
+                )
+        );
+    }
+
+    private static IndexResultRankingService createIndexResultRankingService(Path indexDir, CombinedIndexReader combinedIndexReader) throws IOException, SQLException {
+        return new IndexResultRankingService(
+                new DocumentDbReader(indexDir.resolve("ldbr/documents.db")),
+                new StatefulIndex(combinedIndexReader),
+                new DomainRankingOverrides(null, Path.of("xxxx"))
+        );
+    }
+
+    static QueryFactory createQueryFactory(Path homeDir) throws IOException {
+        return new QueryFactory(
+                new QueryExpansion(
+                        new TermFrequencyDict(homeDir.resolve("model/tfreq-new-algo3.bin")),
+                        new NgramLexicon()
+                )
+        );
+    }
+
+    public static void runValuation(Path homeDir,
+                                    Path indexDir,
+                                    String rawQuery) throws IOException, SQLException, TimeoutException {
+
+        CombinedIndexReader indexReader = createCombinedIndexReader(indexDir);
+        QueryFactory queryFactory = createQueryFactory(homeDir);
+        IndexResultRankingService rankingService = createIndexResultRankingService(indexDir, indexReader);
+
+        var queryLimits = RpcQueryLimits.newBuilder()
+                .setTimeoutMs(10_000)
+                .setResultsTotal(1000)
+                .setResultsByDomain(10)
+                .setFetchSize(4096)
+                .build();
+        SearchSpecification parsedQuery = queryFactory.createQuery(new QueryParams(rawQuery, queryLimits, "NONE", NsfwFilterTier.OFF), PrototypeRankingParameters.sensibleDefaults()).specs;
+
+        System.out.println("Query compiled to: " + parsedQuery.query.compiledQuery);
+
+        SearchParameters searchParameters = new SearchParameters(parsedQuery, new SearchSetAny());
+
+        List<IndexQuery> queries = indexReader.createQueries(new SearchTerms(searchParameters.query, searchParameters.compiledQueryIds), searchParameters.queryParams, new IndexSearchBudget(10_000));
+
+        TLongArrayList allResults = new TLongArrayList();
+        LongQueryBuffer buffer = new LongQueryBuffer(512);
+
+        for (var query : queries) {
+            while (query.hasMore() && allResults.size() < 512 ) {
+                query.getMoreResults(buffer);
+                allResults.addAll(buffer.copyData());
+            }
+            if (allResults.size() >= 512)
+                break;
+        }
+        allResults.sort();
+        if (allResults.size() > 512) {
+            allResults.subList(512,  allResults.size()).clear();
+        }
+
+        var rankingContext = ResultRankingContext.create(indexReader, searchParameters);
+        var rankingData = rankingService.prepareRankingData(rankingContext, new CombinedDocIdList(allResults.toArray()), null);
+
+        int sum = 0;
+
+        Instant runEndTime = Instant.now().plus(runTime);
+        Instant runStartTime =  Instant.now();
+        int sum2 = 0;
+        List<Double> times = new ArrayList<>();
+
+        int iter;
+        for (iter = 0;; iter++) {
+            IndexSearchBudget budget = new IndexSearchBudget(10000);
+            long start = System.nanoTime();
+            sum2 += rankingService.rankResults(budget, rankingContext, rankingData, false).size();
+            long end = System.nanoTime();
+            times.add((end - start)/1_000_000.);
+
+            if ((iter % 100) == 0) {
+                if (Instant.now().isAfter(runEndTime)) {
+                    break;
+                }
+                if (times.size() > 100) {
+                    double[] timesSample = times.stream().mapToDouble(Double::doubleValue).skip(times.size() - 100).sorted().toArray();
+                    System.out.format("P1: %f P10: %f, P90: %f, P99: %f\n", timesSample[1], timesSample[10], timesSample[90], timesSample[99]);
+                }
+                System.out.println(Duration.between(runStartTime, Instant.now()).toMillis() / 1000. + " best times: " + (allResults.size() / 512.) *  times.stream().mapToDouble(Double::doubleValue).sorted().limit(3).average().orElse(-1));
+            }
+        }
+        System.out.println("Benchmark complete after " + iter + " iters!");
+
+        System.out.println("Best times: " + (allResults.size() / 512.) *  times.stream().mapToDouble(Double::doubleValue).sorted().limit(3).average().orElse(-1));
+        System.out.println("Warmup sum: " + sum);
+        System.out.println("Main sum: " + sum2);
+        System.out.println(rankingData.size());
+    }
+
+    public static void runExecution(Path homeDir,
+                                    Path indexDir,
+                                    String rawQuery) throws IOException, SQLException, InterruptedException {
+
+        CombinedIndexReader indexReader = createCombinedIndexReader(indexDir);
+        QueryFactory queryFactory = createQueryFactory(homeDir);
+        IndexResultRankingService rankingService = createIndexResultRankingService(indexDir, indexReader);
+
+        var queryLimits = RpcQueryLimits.newBuilder()
+                .setTimeoutMs(50)
+                .setResultsTotal(1000)
+                .setResultsByDomain(10)
+                .setFetchSize(4096)
+                .build();
+        SearchSpecification parsedQuery = queryFactory.createQuery(new QueryParams(rawQuery, queryLimits, "NONE", NsfwFilterTier.OFF), PrototypeRankingParameters.sensibleDefaults()).specs;
+        System.out.println("Query compiled to: " + parsedQuery.query.compiledQuery);
+
+        System.out.println("Running warmup loop!");
+        int sum = 0;
+
+        Instant runEndTime = Instant.now().plus(runTime);
+        Instant runStartTime =  Instant.now();
+        int sum2 = 0;
+        List<Double> rates = new ArrayList<>();
+        List<Double> times = new ArrayList<>();
+        int iter;
+        for (iter = 0;; iter++) {
+            SearchParameters searchParameters = new SearchParameters(parsedQuery, new SearchSetAny());
+            var execution = new IndexQueryExecution(searchParameters, rankingService, indexReader);
+            long start = System.nanoTime();
+            execution.run();
+            long end = System.nanoTime();
+            sum2 += execution.itemsProcessed();
+            rates.add(execution.itemsProcessed() / ((end - start)/1_000_000_000.));
+            times.add((end - start)/1_000_000.);
+            indexReader.reset();
+            if ((iter % 100) == 0) {
+                if (Instant.now().isAfter(runEndTime)) {
+                    break;
+                }
+                if (times.size() > 100) {
+                    double[] timesSample = times.stream().mapToDouble(Double::doubleValue).skip(times.size() - 100).sorted().toArray();
+                    System.out.format("P1: %f P10: %f, P90: %f, P99: %f\n", timesSample[1], timesSample[10], timesSample[90], timesSample[99]);
+                }
+                System.out.println(Duration.between(runStartTime, Instant.now()).toMillis() / 1000. + " best rates: " +  rates.stream().mapToDouble(Double::doubleValue).map(i -> -i).sorted().map(i -> -i).limit(3).average().orElse(-1));
+            }
+        }
+
+        System.out.println("Benchmark complete after " + iter + " iters!");
+        System.out.println("Best counts: " + rates.stream().mapToDouble(Double::doubleValue).map(i -> -i).sorted().map(i -> -i).limit(3).average().orElse(-1));
+        System.out.println("Warmup sum: " + sum);
+        System.out.println("Main sum: " + sum2);
+    }
+
+    public static void runLookup(Path homeDir,
+                                    Path indexDir,
+                                    String rawQuery) throws IOException, SQLException
+    {
+
+        CombinedIndexReader indexReader = createCombinedIndexReader(indexDir);
+        QueryFactory queryFactory = createQueryFactory(homeDir);
+
+        var queryLimits = RpcQueryLimits.newBuilder()
+                .setTimeoutMs(10_000)
+                .setResultsTotal(1000)
+                .setResultsByDomain(10)
+                .setFetchSize(4096)
+                .build();
+        SearchSpecification parsedQuery = queryFactory.createQuery(new QueryParams(rawQuery, queryLimits, "NONE", NsfwFilterTier.OFF), PrototypeRankingParameters.sensibleDefaults()).specs;
+
+        System.out.println("Query compiled to: " + parsedQuery.query.compiledQuery);
+
+        SearchParameters searchParameters = new SearchParameters(parsedQuery, new SearchSetAny());
+
+
+        Instant runEndTime = Instant.now().plus(runTime);
+
+        LongQueryBuffer buffer = new LongQueryBuffer(512);
+        int sum1 = 0;
+        int iter;
+
+        Instant runStartTime =  Instant.now();
+        int sum2 = 0;
+        List<Double> times = new ArrayList<>();
+        for (iter = 0;; iter++) {
+            indexReader.reset();
+            List<IndexQuery> queries = indexReader.createQueries(new SearchTerms(searchParameters.query, searchParameters.compiledQueryIds), searchParameters.queryParams, new IndexSearchBudget(150));
+
+            long start = System.nanoTime();
+            for (var query : queries) {
+                while (query.hasMore()) {
+                    query.getMoreResults(buffer);
+                    sum1 += buffer.end;
+                    buffer.reset();
+                }
+            }
+            long end = System.nanoTime();
+            times.add((end - start)/1_000_000_000.);
+
+            if ((iter % 10) == 0) {
+                if (Instant.now().isAfter(runEndTime)) {
+                    break;
+                }
+                if (times.size() > 100) {
+                    double[] timesSample = times.stream().mapToDouble(Double::doubleValue).skip(times.size() - 100).sorted().toArray();
+                    System.out.format("P1: %f P10: %f, P90: %f, P99: %f\n", timesSample[1], timesSample[10], timesSample[90], timesSample[99]);
+                }
+                System.out.println(Duration.between(runStartTime, Instant.now()).toMillis() / 1000. + " best times: " + times.stream().mapToDouble(Double::doubleValue).sorted().limit(3).average().orElse(-1));
+            }
+        }
+        System.out.println("Benchmark complete after " + iter + " iters!");
+        System.out.println("Best times: " + times.stream().mapToDouble(Double::doubleValue).sorted().limit(3).average().orElse(-1));
+        System.out.println("Warmup sum: " + sum1);
+        System.out.println("Main sum: " + sum2);
+    }
+}

code/index/index-reverse/build.gradle

@@ -15,7 +15,9 @@ apply from: "$rootProject.projectDir/srcsets.gradle"
 
 dependencies {
     implementation project(':code:libraries:array')
+    implementation project(':code:libraries:native')
     implementation project(':code:libraries:btree')
+    implementation project(':code:libraries:skiplist')
     implementation project(':code:libraries:coded-sequence')
     implementation project(':code:libraries:random-write-funnel')
     implementation project(':code:index:query')

code/index/index-reverse/java/nu/marginalia/index/FullIndexEntrySource.java

@@ -1,32 +1,26 @@
 package nu.marginalia.index;
 
 import nu.marginalia.array.page.LongQueryBuffer;
-import nu.marginalia.btree.BTreeReader;
 import nu.marginalia.index.query.EntrySource;
-
-import static java.lang.Math.min;
+import nu.marginalia.skiplist.SkipListReader;
 
 public class FullIndexEntrySource implements EntrySource {
     private final String name;
-    private final BTreeReader reader;
 
     int pos;
     int endOffset;
 
-    final int entrySize;
+    private final SkipListReader reader;
     private final long wordId;
 
     public FullIndexEntrySource(String name,
-                                BTreeReader reader,
-                                int entrySize,
+                                SkipListReader reader,
                                 long wordId) {
         this.name = name;
         this.reader = reader;
-        this.entrySize = entrySize;
         this.wordId = wordId;
 
         pos = 0;
-        endOffset = pos + entrySize * reader.numEntries();
     }
 
     @Override
@@ -36,32 +30,14 @@ public class FullIndexEntrySource implements EntrySource {
 
     @Override
     public void read(LongQueryBuffer buffer) {
-        buffer.reset();
-        buffer.end = min(buffer.end, endOffset - pos);
-        reader.readData(buffer.data, buffer.end, pos);
-        pos += buffer.end;
-
-        destagger(buffer);
-        buffer.uniq();
-    }
-
-    private void destagger(LongQueryBuffer buffer) {
-        if (entrySize == 1)
-            return;
-
-        for (int ri = entrySize, wi=1; ri < buffer.end ; ri+=entrySize, wi++) {
-            buffer.data.set(wi, buffer.data.get(ri));
-        }
-
-        buffer.end /= entrySize;
+        reader.getData(buffer);
     }
 
     @Override
     public boolean hasMore() {
-        return pos < endOffset;
+        return !reader.atEnd();
     }
 
-
     @Override
     public String indexName() {
         return name + ":" + Long.toHexString(wordId);

code/index/index-reverse/java/nu/marginalia/index/FullReverseIndexReader.java

@@ -2,16 +2,17 @@ package nu.marginalia.index;
 
 import nu.marginalia.array.LongArray;
 import nu.marginalia.array.LongArrayFactory;
+import nu.marginalia.array.pool.BufferPool;
 import nu.marginalia.btree.BTreeReader;
-import nu.marginalia.index.positions.TermData;
+import nu.marginalia.ffi.LinuxSystemCalls;
 import nu.marginalia.index.positions.PositionsFileReader;
-import nu.marginalia.index.query.EmptyEntrySource;
-import nu.marginalia.index.query.EntrySource;
-import nu.marginalia.index.query.ReverseIndexRejectFilter;
-import nu.marginalia.index.query.ReverseIndexRetainFilter;
+import nu.marginalia.index.positions.TermData;
+import nu.marginalia.index.query.*;
 import nu.marginalia.index.query.filter.QueryFilterLetThrough;
 import nu.marginalia.index.query.filter.QueryFilterNoPass;
 import nu.marginalia.index.query.filter.QueryFilterStepIf;
+import nu.marginalia.skiplist.SkipListConstants;
+import nu.marginalia.skiplist.SkipListReader;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -20,10 +21,13 @@ import java.lang.foreign.Arena;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeoutException;
+import java.util.function.Consumer;
 
 public class FullReverseIndexReader {
     private final LongArray words;
     private final LongArray documents;
+
     private final long wordsDataOffset;
     private final Logger logger = LoggerFactory.getLogger(getClass());
     private final BTreeReader wordsBTreeReader;
@@ -31,6 +35,8 @@ public class FullReverseIndexReader {
 
     private final PositionsFileReader positionsFileReader;
 
+    private final BufferPool dataPool;
+
     public FullReverseIndexReader(String name,
                                   Path words,
                                   Path documents,
@@ -44,6 +50,7 @@ public class FullReverseIndexReader {
             this.documents = null;
             this.wordsBTreeReader = null;
             this.wordsDataOffset = -1;
+            this.dataPool = null;
             return;
         }
 
@@ -52,6 +59,11 @@ public class FullReverseIndexReader {
         this.words = LongArrayFactory.mmapForReadingShared(words);
         this.documents = LongArrayFactory.mmapForReadingShared(documents);
 
+        LinuxSystemCalls.madviseRandom(this.words.getMemorySegment());
+        LinuxSystemCalls.madviseRandom(this.documents.getMemorySegment());
+
+        dataPool = new BufferPool(documents, SkipListConstants.BLOCK_SIZE, (int) (Long.getLong("index.bufferPoolSize", 512*1024*1024L) / SkipListConstants.BLOCK_SIZE));
+
         wordsBTreeReader = new BTreeReader(this.words, ReverseIndexParameters.wordsBTreeContext, 0);
         wordsDataOffset = wordsBTreeReader.getHeader().dataOffsetLongs();
 
@@ -62,6 +74,11 @@ public class FullReverseIndexReader {
         }
     }
 
+    public void reset() {
+        dataPool.reset();
+    }
+
+
     private void selfTest() {
         logger.info("Running self test program");
 
@@ -76,6 +93,15 @@ public class FullReverseIndexReader {
         ReverseIndexSelfTest.runSelfTest6(wordsDataRange, documents);
     }
 
+    public void eachDocRange(Consumer<LongArray> eachDocRange) {
+        long wordsDataSize = wordsBTreeReader.getHeader().numEntries() * 2L;
+        var wordsDataRange = words.range(wordsDataOffset, wordsDataOffset + wordsDataSize);
+
+        for (long i = 1; i < wordsDataRange.size(); i+=2) {
+            var docsBTreeReader = new BTreeReader(documents, ReverseIndexParameters.fullDocsBTreeContext, wordsDataRange.get(i));
+            eachDocRange.accept(docsBTreeReader.data());
+        }
+    }
 
     /** Calculate the offset of the word in the documents.
      * If the return-value is negative, the term does not exist
@@ -101,27 +127,27 @@ public class FullReverseIndexReader {
         if (offset < 0) // No documents
             return new EmptyEntrySource();
 
-        return new FullIndexEntrySource(name, createReaderNew(offset), 2, termId);
+        return new FullIndexEntrySource(name, getReader(offset), termId);
     }
 
     /** Create a filter step requiring the specified termId to exist in the documents */
-    public QueryFilterStepIf also(long termId) {
+    public QueryFilterStepIf also(long termId, IndexSearchBudget budget) {
         long offset = wordOffset(termId);
 
         if (offset < 0) // No documents
             return new QueryFilterNoPass();
 
-        return new ReverseIndexRetainFilter(createReaderNew(offset), name, termId);
+        return new ReverseIndexRetainFilter(getReader(offset), name, termId, budget);
     }
 
     /** Create a filter step requiring the specified termId to be absent from the documents */
-    public QueryFilterStepIf not(long termId) {
+    public QueryFilterStepIf not(long termId, IndexSearchBudget budget) {
         long offset = wordOffset(termId);
 
         if (offset < 0) // No documents
             return new QueryFilterLetThrough();
 
-        return new ReverseIndexRejectFilter(createReaderNew(offset));
+        return new ReverseIndexRejectFilter(getReader(offset), budget);
     }
 
     /** Return the number of documents with the termId in the index */
@@ -131,15 +157,41 @@ public class FullReverseIndexReader {
         if (offset < 0)
             return 0;
 
-        return createReaderNew(offset).numEntries();
+        return getReader(offset).estimateSize();
     }
 
     /** Create a BTreeReader for the document offset associated with a termId */
-    private BTreeReader createReaderNew(long offset) {
-        return new BTreeReader(
-                documents,
-                ReverseIndexParameters.fullDocsBTreeContext,
-                offset);
+    private SkipListReader getReader(long offset) {
+        return new SkipListReader(dataPool, offset);
+    }
+
+    public TermData[] getTermData(Arena arena,
+                                  IndexSearchBudget budget,
+                                  long[] termIds,
+                                  long[] docIds)
+            throws TimeoutException
+    {
+
+        long[] offsetsAll = new long[termIds.length * docIds.length];
+
+        for (int i = 0; i < termIds.length; i++) {
+            long termId = termIds[i];
+            long offset = wordOffset(termId);
+
+            if (offset < 0) {
+                // This is likely a bug in the code, but we can't throw an exception here
+                logger.debug("Missing offset for word {}", termId);
+                continue;
+            }
+
+            var reader = getReader(offset);
+
+            // Read the size and offset of the position data
+            var offsetsForTerm = reader.getValueOffsets(docIds);
+            System.arraycopy(offsetsForTerm, 0, offsetsAll, i * docIds.length, docIds.length);
+        }
+
+        return positionsFileReader.getTermData(arena, budget, offsetsAll);
     }
 
     public TermData[] getTermData(Arena arena,
@@ -156,20 +208,28 @@ public class FullReverseIndexReader {
             return ret;
         }
 
-        var reader = createReaderNew(offset);
+        var reader = getReader(offset);
 
         // Read the size and offset of the position data
-        var offsets = reader.queryData(docIds, 1);
+        var offsets = reader.getValueOffsets(docIds);
 
-        for (int i = 0; i < docIds.length; i++) {
-            if (offsets[i] == 0)
-                continue;
-            ret[i] = positionsFileReader.getTermData(arena, offsets[i]);
+        // FIXME this entire method chain only exists for a single unit test
+        // remove me!
+        try {
+            return positionsFileReader.getTermData(arena, new IndexSearchBudget(1000), offsets);
+        } catch (TimeoutException e) {
+            throw new RuntimeException(e);
         }
-        return ret;
     }
 
     public void close() {
+        try {
+            dataPool.close();
+        }
+        catch (Exception e) {
+            logger.warn("Error while closing bufferPool", e);
+        }
+
         if (documents != null)
             documents.close();
 

code/index/index-reverse/java/nu/marginalia/index/PrioIndexEntrySource.java

@@ -13,7 +13,7 @@ import java.nio.channels.FileChannel;
 public class PrioIndexEntrySource implements EntrySource {
     private final String name;
 
-    private final ByteBuffer readData = ByteBuffer.allocate(1024);
+    private final ByteBuffer readData = ByteBuffer.allocate(8*1024);
     private final BitReader bitReader = new BitReader(readData, this::fillReadBuffer);
 
     private final FileChannel docsFileChannel;

code/index/index-reverse/java/nu/marginalia/index/PrioReverseIndexReader.java

@@ -3,6 +3,7 @@ package nu.marginalia.index;
 import nu.marginalia.array.LongArray;
 import nu.marginalia.array.LongArrayFactory;
 import nu.marginalia.btree.BTreeReader;
+import nu.marginalia.ffi.LinuxSystemCalls;
 import nu.marginalia.index.query.EmptyEntrySource;
 import nu.marginalia.index.query.EntrySource;
 import org.slf4j.Logger;
@@ -40,6 +41,8 @@ public class PrioReverseIndexReader {
 
         this.words = LongArrayFactory.mmapForReadingShared(words);
 
+        LinuxSystemCalls.madviseRandom(this.words.getMemorySegment());
+
         wordsBTreeReader = new BTreeReader(this.words, ReverseIndexParameters.wordsBTreeContext, 0);
         wordsDataOffset = wordsBTreeReader.getHeader().dataOffsetLongs();
 

code/index/index-reverse/java/nu/marginalia/index/ReverseIndexParameters.java

@@ -5,7 +5,7 @@ import nu.marginalia.btree.model.BTreeContext;
 
 public class ReverseIndexParameters
 {
-    public static final BTreeContext prioDocsBTreeContext = new BTreeContext(5, 1, BTreeBlockSize.BS_2048);
-    public static final BTreeContext fullDocsBTreeContext = new BTreeContext(5, 2, BTreeBlockSize.BS_2048);
-    public static final BTreeContext wordsBTreeContext = new BTreeContext(5, 2, BTreeBlockSize.BS_2048);
+    public static final BTreeContext prioDocsBTreeContext = new BTreeContext(5, 1, BTreeBlockSize.BS_512);
+    public static final BTreeContext fullDocsBTreeContext = new BTreeContext(5, 2, BTreeBlockSize.BS_512);
+    public static final BTreeContext wordsBTreeContext = new BTreeContext(5, 2, BTreeBlockSize.BS_512);
 }

code/index/index-reverse/java/nu/marginalia/index/construction/PositionsFileConstructor.java

@@ -14,62 +14,103 @@ import java.nio.file.StandardOpenOption;
  *
  * The positions data is concatenated in the file, with each term's metadata
  * followed by its positions.  The metadata is a single byte, and the positions
- * are encoded using the Elias Gamma code, with zero padded bits at the end to
- * get octet alignment.
- *
+ * are encoded varints.
  * <p></p>
  *
  * It is the responsibility of the caller to keep track of the byte offset of
  * each posting in the file.
  */
 public class PositionsFileConstructor implements AutoCloseable {
-    private final ByteBuffer workBuffer = ByteBuffer.allocate(65536);
-    
     private final Path file;
     private final FileChannel channel;
 
-    private long offset;
-
     public PositionsFileConstructor(Path file) throws IOException {
         this.file = file;
 
         channel = FileChannel.open(file, StandardOpenOption.CREATE, StandardOpenOption.WRITE);
     }
 
+    /** Represents a block of positions lists.  Each writer thread should hold on to
+     * a block object to ensure the locality of its positions lists.
+     * When finished, commit() must be run.
+     * */
+    public class PositionsFileBlock {
+        private final ByteBuffer workBuffer = ByteBuffer.allocate(1024*1024*16);
+        private long position;
+
+        public PositionsFileBlock(long position) {
+            this.position = position;
+        }
+
+        public boolean fitsData(int size) {
+            return workBuffer.remaining() >= size;
+        }
+
+        public void commit() throws IOException {
+            workBuffer.position(0);
+            workBuffer.limit(workBuffer.capacity());
+            int pos = 0;
+            while (workBuffer.hasRemaining()) {
+                pos += channel.write(workBuffer, this.position + pos + workBuffer.position());
+            }
+        }
+
+        private void relocate() throws IOException {
+            workBuffer.clear();
+            position = channel.position();
+            while (workBuffer.hasRemaining()) {
+                channel.write(workBuffer);
+            }
+            workBuffer.clear();
+        }
+
+        public long position() {
+            return this.position + workBuffer.position();
+        }
+        public void put(byte b) {
+            workBuffer.put(b);
+        }
+        public void put(ByteBuffer buffer) {
+            workBuffer.put(buffer);
+        }
+    }
+
+    public PositionsFileBlock getBlock() throws IOException {
+        synchronized (this) {
+            var block = new PositionsFileBlock(channel.position());
+            block.relocate();
+            return block;
+        }
+    }
+
     /** Add a term to the positions file
+     *
+     * @param block a block token to ensure data locality
      * @param termMeta the term metadata
      * @param positionsBuffer the positions of the term
+     *
      * @return the offset of the term in the file, with the size of the data in the highest byte
      */
-    public long add(byte termMeta, ByteBuffer positionsBuffer) throws IOException {
-        synchronized (file) {
-            int size = 1 + positionsBuffer.remaining();
+    public long add(PositionsFileBlock block, byte termMeta, ByteBuffer positionsBuffer) throws IOException {
+        int size = 1 + positionsBuffer.remaining();
 
-            if (workBuffer.remaining() < size) {
-                workBuffer.flip();
-                channel.write(workBuffer);
-                workBuffer.clear();
+        if (!block.fitsData(size)) {
+            synchronized (this) {
+                block.commit();
+                block.relocate();
             }
+        }
+        synchronized (file) {
+            long offset = block.position();
 
-            workBuffer.put(termMeta);
-            workBuffer.put(positionsBuffer);
+            block.put(termMeta);
+            block.put(positionsBuffer);
 
-            long ret = PositionCodec.encode(size, offset);
-
-            offset += size;
-
-            return ret;
+            return PositionCodec.encode(size, offset);
         }
     }
 
     public void close() throws IOException {
-        if (workBuffer.hasRemaining()) {
-            workBuffer.flip();
-
-            while (workBuffer.hasRemaining())
-                channel.write(workBuffer);
-        }
-
         channel.force(false);
         channel.close();
     }

code/index/index-reverse/java/nu/marginalia/index/construction/full/FullIndexBTreeTransformer.java

@@ -1,46 +0,0 @@
-package nu.marginalia.index.construction.full;
-
-import nu.marginalia.array.LongArray;
-import nu.marginalia.array.algo.LongArrayTransformations;
-import nu.marginalia.btree.BTreeWriter;
-import nu.marginalia.btree.model.BTreeContext;
-
-import java.io.IOException;
-
-/** Constructs the BTrees in a reverse index */
-public class FullIndexBTreeTransformer implements LongArrayTransformations.LongIOTransformer {
-    private final BTreeWriter writer;
-    private final int entrySize;
-    private final LongArray documentsArray;
-
-    long start = 0;
-    long writeOffset = 0;
-
-    public FullIndexBTreeTransformer(LongArray urlsFileMap,
-                                     int entrySize,
-                                     BTreeContext bTreeContext,
-                                     LongArray documentsArray) {
-        this.documentsArray = documentsArray;
-        this.writer = new BTreeWriter(urlsFileMap, bTreeContext);
-        this.entrySize = entrySize;
-    }
-
-    @Override
-    public long transform(long pos, long end) throws IOException {
-
-        final int size = (int) ((end - start) / entrySize);
-
-        if (size == 0) {
-            return -1;
-        }
-
-        final long offsetForBlock = writeOffset;
-
-        writeOffset += writer.write(writeOffset, size,
-                mapRegion -> mapRegion.transferFrom(documentsArray, start, 0, end - start)
-        );
-
-        start = end;
-        return offsetForBlock;
-    }
-}

code/index/index-reverse/java/nu/marginalia/index/construction/full/FullIndexSkipListTransformer.java

@@ -0,0 +1,40 @@
+package nu.marginalia.index.construction.full;
+
+import nu.marginalia.array.LongArray;
+import nu.marginalia.array.algo.LongArrayTransformations;
+import nu.marginalia.skiplist.SkipListWriter;
+
+import java.io.IOException;
+import java.nio.file.Path;
+
+/** Constructs the BTrees in a reverse index */
+public class FullIndexSkipListTransformer implements LongArrayTransformations.LongIOTransformer, AutoCloseable {
+    private final SkipListWriter writer;
+    private final LongArray documentsArray;
+
+    long start = 0;
+
+    public FullIndexSkipListTransformer(Path docsOutputFile,
+                                        LongArray documentsArray) throws IOException {
+        this.documentsArray = documentsArray;
+        this.writer = new SkipListWriter(docsOutputFile);
+    }
+
+    @Override
+    public long transform(long pos, long end) throws IOException {
+
+        final int size = (int) ((end - start) / 2);
+
+        if (size == 0) {
+            return -1;
+        }
+
+        long offset = writer.writeList(documentsArray, start, size);
+        start = end;
+        return offset;
+    }
+
+    public void close() throws IOException {
+        writer.close();
+    }
+}

code/index/index-reverse/java/nu/marginalia/index/construction/full/FullPreindex.java

@@ -6,7 +6,6 @@ import nu.marginalia.btree.BTreeWriter;
 import nu.marginalia.index.ReverseIndexParameters;
 import nu.marginalia.index.construction.CountToOffsetTransformer;
 import nu.marginalia.index.construction.DocIdRewriter;
-import nu.marginalia.index.construction.IndexSizeEstimator;
 import nu.marginalia.index.construction.PositionsFileConstructor;
 import nu.marginalia.index.journal.IndexJournalPage;
 import org.slf4j.Logger;
@@ -81,15 +80,11 @@ public class FullPreindex {
 
         // Estimate the size of the docs index data
         offsets.transformEach(0, offsets.size(), new CountToOffsetTransformer(2));
-        IndexSizeEstimator sizeEstimator = new IndexSizeEstimator(ReverseIndexParameters.fullDocsBTreeContext, 2);
-        offsets.fold(0, 0, offsets.size(), sizeEstimator);
 
         // Write the docs file
-        LongArray finalDocs = LongArrayFactory.mmapForWritingConfined(outputFileDocs, sizeEstimator.size);
-        offsets.transformEachIO(0, offsets.size(),
-                new FullIndexBTreeTransformer(finalDocs, 2,
-                        ReverseIndexParameters.fullDocsBTreeContext,
-                        documents.documents));
+        try (var transformer = new FullIndexSkipListTransformer(outputFileDocs, documents.documents)) {
+            offsets.transformEachIO(0, offsets.size(), transformer);
+        }
 
         LongArray wordIds = segments.wordIds;
 
@@ -102,7 +97,7 @@ public class FullPreindex {
         // Estimate the size of the words index data
         long wordsSize = ReverseIndexParameters.wordsBTreeContext.calculateSize((int) offsets.size());
 
-        // Construct the tree
+        // Construct the keywords tree
         LongArray wordsArray = LongArrayFactory.mmapForWritingConfined(outputFileWords, wordsSize);
 
         new BTreeWriter(wordsArray, ReverseIndexParameters.wordsBTreeContext)
@@ -113,8 +108,6 @@ public class FullPreindex {
             }
         });
 
-        finalDocs.force();
-        finalDocs.close();
         wordsArray.force();
         wordsArray.close();