Merge branch 'main' into zap-notification-streaming

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: denoland/deno:1.46.3
+image: denoland/deno:2.0.0-rc.3
 
 default:
   interruptible: true

deno.json

@@ -32,8 +32,9 @@
     "@isaacs/ttlcache": "npm:@isaacs/ttlcache@^1.4.1",
     "@lambdalisue/async": "jsr:@lambdalisue/async@^2.1.1",
     "@noble/secp256k1": "npm:@noble/secp256k1@^2.0.0",
-    "@nostrify/db": "jsr:@nostrify/db@^0.32.2",
+    "@nostrify/db": "jsr:@nostrify/db@^0.35.0",
-    "@nostrify/nostrify": "jsr:@nostrify/nostrify@^0.30.1",
+    "@nostrify/nostrify": "jsr:@nostrify/nostrify@^0.36.0",
+    "@nostrify/policies": "jsr:@nostrify/policies@^0.35.0",
     "@scure/base": "npm:@scure/base@^1.1.6",
     "@sentry/deno": "https://deno.land/x/sentry@7.112.2/index.mjs",
     "@soapbox/kysely-pglite": "jsr:@soapbox/kysely-pglite@^0.0.1",

deno.lock

@@ -13,19 +13,27 @@
       "jsr:@gleasonator/policy@0.5.0": "jsr:@gleasonator/policy@0.5.0",
       "jsr:@gleasonator/policy@0.5.1": "jsr:@gleasonator/policy@0.5.1",
       "jsr:@gleasonator/policy@0.5.2": "jsr:@gleasonator/policy@0.5.2",
-      "jsr:@hono/hono@^4.4.6": "jsr:@hono/hono@4.5.11",
+      "jsr:@gleasonator/policy@0.6.0": "jsr:@gleasonator/policy@0.6.0",
+      "jsr:@gleasonator/policy@0.6.1": "jsr:@gleasonator/policy@0.6.1",
+      "jsr:@gleasonator/policy@0.6.3": "jsr:@gleasonator/policy@0.6.3",
+      "jsr:@gleasonator/policy@0.6.4": "jsr:@gleasonator/policy@0.6.4",
+      "jsr:@hono/hono@^4.4.6": "jsr:@hono/hono@4.6.2",
       "jsr:@lambdalisue/async@^2.1.1": "jsr:@lambdalisue/async@2.1.1",
-      "jsr:@nostrify/db@^0.32.2": "jsr:@nostrify/db@0.32.2",
+      "jsr:@nostrify/db@^0.35.0": "jsr:@nostrify/db@0.35.0",
       "jsr:@nostrify/nostrify@^0.22.1": "jsr:@nostrify/nostrify@0.22.5",
       "jsr:@nostrify/nostrify@^0.22.4": "jsr:@nostrify/nostrify@0.22.4",
       "jsr:@nostrify/nostrify@^0.22.5": "jsr:@nostrify/nostrify@0.22.5",
-      "jsr:@nostrify/nostrify@^0.30.0": "jsr:@nostrify/nostrify@0.30.1",
-      "jsr:@nostrify/nostrify@^0.30.1": "jsr:@nostrify/nostrify@0.30.1",
       "jsr:@nostrify/nostrify@^0.31.0": "jsr:@nostrify/nostrify@0.31.0",
+      "jsr:@nostrify/nostrify@^0.32.0": "jsr:@nostrify/nostrify@0.32.0",
+      "jsr:@nostrify/nostrify@^0.35.0": "jsr:@nostrify/nostrify@0.35.0",
+      "jsr:@nostrify/nostrify@^0.36.0": "jsr:@nostrify/nostrify@0.36.0",
       "jsr:@nostrify/policies@^0.33.0": "jsr:@nostrify/policies@0.33.0",
       "jsr:@nostrify/policies@^0.33.1": "jsr:@nostrify/policies@0.33.1",
+      "jsr:@nostrify/policies@^0.34.0": "jsr:@nostrify/policies@0.34.0",
+      "jsr:@nostrify/policies@^0.35.0": "jsr:@nostrify/policies@0.35.0",
       "jsr:@nostrify/types@^0.30.0": "jsr:@nostrify/types@0.30.1",
       "jsr:@nostrify/types@^0.30.1": "jsr:@nostrify/types@0.30.1",
+      "jsr:@nostrify/types@^0.35.0": "jsr:@nostrify/types@0.35.0",
       "jsr:@soapbox/kysely-pglite@^0.0.1": "jsr:@soapbox/kysely-pglite@0.0.1",
       "jsr:@soapbox/stickynotes@^0.4.0": "jsr:@soapbox/stickynotes@0.4.0",
       "jsr:@std/assert@^0.213.1": "jsr:@std/assert@0.213.1",
@@ -49,7 +57,7 @@
       "jsr:@std/fs@^0.229.3": "jsr:@std/fs@0.229.3",
       "jsr:@std/internal@^1.0.0": "jsr:@std/internal@1.0.3",
       "jsr:@std/io@^0.223.0": "jsr:@std/io@0.223.0",
-      "jsr:@std/io@^0.224": "jsr:@std/io@0.224.7",
+      "jsr:@std/io@^0.224": "jsr:@std/io@0.224.8",
       "jsr:@std/json@^0.223.0": "jsr:@std/json@0.223.0",
       "jsr:@std/media-types@^0.224.1": "jsr:@std/media-types@0.224.1",
       "jsr:@std/path@0.213.1": "jsr:@std/path@0.213.1",
@@ -171,6 +179,34 @@
           "jsr:@nostrify/policies@^0.33.1"
         ]
       },
+      "@gleasonator/policy@0.6.0": {
+        "integrity": "77f52bb245255a61070a4970c50e2ea8e82345c1de2fef12b9d8887a20b46e6d",
+        "dependencies": [
+          "jsr:@nostrify/nostrify@^0.32.0",
+          "jsr:@nostrify/policies@^0.34.0"
+        ]
+      },
+      "@gleasonator/policy@0.6.1": {
+        "integrity": "ba763d69332a736678b068b4063709874bc64010dfc3f974818218a41deb2291",
+        "dependencies": [
+          "jsr:@nostrify/nostrify@^0.32.0",
+          "jsr:@nostrify/policies@^0.34.0"
+        ]
+      },
+      "@gleasonator/policy@0.6.3": {
+        "integrity": "7126c52edd3de21488714e66ec71f31ba9b14f8afc761ab73ac7c3ecc936625c",
+        "dependencies": [
+          "jsr:@nostrify/nostrify@^0.32.0",
+          "jsr:@nostrify/policies@^0.34.0"
+        ]
+      },
+      "@gleasonator/policy@0.6.4": {
+        "integrity": "fd91c94546edd1de1faa80cb3248699b2f010ef1bdd89818dbc4a03e7606e0bb",
+        "dependencies": [
+          "jsr:@nostrify/nostrify@^0.32.0",
+          "jsr:@nostrify/policies@^0.34.0"
+        ]
+      },
       "@hono/hono@4.4.6": {
         "integrity": "aa557ca9930787ee86b9ca1730691f1ce1c379174c2cb244d5934db2b6314453"
       },
@@ -195,14 +231,17 @@
       "@hono/hono@4.5.9": {
         "integrity": "47f561e67aedbd6d1e21e3a1ae26c1b80ffdb62a51c161d502e75bee17ca40af"
       },
+      "@hono/hono@4.6.2": {
+        "integrity": "35fcf3be4687825080b01bed7bbe2ac66f8d8b8939f0bad459661bf3b46d916f"
+      },
       "@lambdalisue/async@2.1.1": {
         "integrity": "1fc9bc6f4ed50215cd2f7217842b18cea80f81c25744f88f8c5eb4be5a1c9ab4"
       },
-      "@nostrify/db@0.32.2": {
+      "@nostrify/db@0.35.0": {
-        "integrity": "265fb41e9d5810b99f1003ce56c89e4b468e6d0c04e7b9d9e3126c4efd49c1c2",
+        "integrity": "637191c41812544e361b7997dc44ea098f8bd7efebb28f37a8a7142a0ecada8d",
         "dependencies": [
-          "jsr:@nostrify/nostrify@^0.31.0",
+          "jsr:@nostrify/nostrify@^0.35.0",
-          "jsr:@nostrify/types@^0.30.1",
+          "jsr:@nostrify/types@^0.35.0",
           "npm:kysely@^0.27.3",
           "npm:nostr-tools@^2.7.0"
         ]
@@ -251,13 +290,11 @@
           "npm:zod@^3.23.8"
         ]
       },
-      "@nostrify/nostrify@0.30.1": {
+      "@nostrify/nostrify@0.31.0": {
-        "integrity": "fcc923707e87a9fbecc82dbb18756d1d3d134cd0763f4b1254c4bce709e811eb",
+        "integrity": "1c1b686bb9ca3ad8d19807e3b96ef3793a65d70fd0f433fe6ef8b3fdb9f45557",
         "dependencies": [
-          "jsr:@nostrify/types@^0.30.0",
+          "jsr:@nostrify/types@^0.30.1",
-          "jsr:@std/crypto@^0.224.0",
           "jsr:@std/encoding@^0.224.1",
-          "npm:@scure/base@^1.1.6",
           "npm:@scure/bip32@^1.4.0",
           "npm:@scure/bip39@^1.3.0",
           "npm:lru-cache@^10.2.0",
@@ -266,8 +303,8 @@
           "npm:zod@^3.23.8"
         ]
       },
-      "@nostrify/nostrify@0.31.0": {
+      "@nostrify/nostrify@0.32.0": {
-        "integrity": "1c1b686bb9ca3ad8d19807e3b96ef3793a65d70fd0f433fe6ef8b3fdb9f45557",
+        "integrity": "2d3b7a9cce275c150355f8e566c11f14044afd0b889afcb48e883da9467bdaa9",
         "dependencies": [
           "jsr:@nostrify/types@^0.30.1",
           "jsr:@std/encoding@^0.224.1",
@@ -279,6 +316,34 @@
           "npm:zod@^3.23.8"
         ]
       },
+      "@nostrify/nostrify@0.35.0": {
+        "integrity": "9bfef4883838b8b4cb2e2b28a60b72de95391ca5b789bc7206a2baea054dea55",
+        "dependencies": [
+          "jsr:@nostrify/types@^0.35.0",
+          "jsr:@std/encoding@^0.224.1",
+          "npm:@scure/bip32@^1.4.0",
+          "npm:@scure/bip39@^1.3.0",
+          "npm:lru-cache@^10.2.0",
+          "npm:nostr-tools@^2.7.0",
+          "npm:websocket-ts@^2.1.5",
+          "npm:zod@^3.23.8"
+        ]
+      },
+      "@nostrify/nostrify@0.36.0": {
+        "integrity": "f00dbff1f02a2c496c5e85eeeb7a84101b7dd874d87456449dc71b6d037e40fc",
+        "dependencies": [
+          "jsr:@nostrify/types@^0.35.0",
+          "jsr:@std/crypto@^0.224.0",
+          "jsr:@std/encoding@^0.224.1",
+          "npm:@scure/base@^1.1.6",
+          "npm:@scure/bip32@^1.4.0",
+          "npm:@scure/bip39@^1.3.0",
+          "npm:lru-cache@^10.2.0",
+          "npm:nostr-tools@^2.7.0",
+          "npm:websocket-ts@^2.1.5",
+          "npm:zod@^3.23.8"
+        ]
+      },
       "@nostrify/policies@0.33.0": {
         "integrity": "c946b06d0527298b4d7c9819d142a10f522ba09eee76c37525aa4acfc5d87aee",
         "dependencies": [
@@ -293,12 +358,31 @@
           "npm:nostr-tools@^2.7.0"
         ]
       },
+      "@nostrify/policies@0.34.0": {
+        "integrity": "27eb8fb36106a29e982ec7fc6bbb91bd6989f8ce11113a3ef6c528b4c2deceee",
+        "dependencies": [
+          "jsr:@nostrify/nostrify@^0.32.0",
+          "jsr:@nostrify/types@^0.30.1",
+          "npm:nostr-tools@^2.7.0"
+        ]
+      },
+      "@nostrify/policies@0.35.0": {
+        "integrity": "b828fac9f253e460a9587c05588b7dae6a0a32c5a9c9083e449219887b9e8e20",
+        "dependencies": [
+          "jsr:@nostrify/nostrify@^0.35.0",
+          "jsr:@nostrify/types@^0.35.0",
+          "npm:nostr-tools@^2.7.0"
+        ]
+      },
       "@nostrify/types@0.30.0": {
         "integrity": "1f38fa849cff930bd709edbf94ef9ac02f46afb8b851f86c8736517b354616da"
       },
       "@nostrify/types@0.30.1": {
         "integrity": "245da176f6893a43250697db51ad32bfa29bf9b1cdc1ca218043d9abf6de5ae5"
       },
+      "@nostrify/types@0.35.0": {
+        "integrity": "b8d515563d467072694557d5626fa1600f74e83197eef45dd86a9a99c64f7fe6"
+      },
       "@soapbox/kysely-pglite@0.0.1": {
         "integrity": "7a4221aa780aad6fba9747c45c59dfb1c62017ba8cad9db5607f6e5822c058d5",
         "dependencies": [
@@ -428,6 +512,12 @@
           "jsr:@std/bytes@^1.0.2"
         ]
       },
+      "@std/io@0.224.8": {
+        "integrity": "f525d05d51fd873de6352b9afcf35cab9ab5dc448bf3c20e0c8b521ded9be392",
+        "dependencies": [
+          "jsr:@std/bytes@^1.0.2"
+        ]
+      },
       "@std/json@0.223.0": {
         "integrity": "9a4a255931dd0397924c6b10bb6a72fe3e28ddd876b981ada2e3b8dd0764163f",
         "dependencies": [
@@ -2009,8 +2099,9 @@
       "jsr:@bradenmacdonald/s3-lite-client@^0.7.4",
       "jsr:@hono/hono@^4.4.6",
       "jsr:@lambdalisue/async@^2.1.1",
-      "jsr:@nostrify/db@^0.32.2",
+      "jsr:@nostrify/db@^0.35.0",
-      "jsr:@nostrify/nostrify@^0.30.1",
+      "jsr:@nostrify/nostrify@^0.36.0",
+      "jsr:@nostrify/policies@^0.35.0",
       "jsr:@soapbox/kysely-pglite@^0.0.1",
       "jsr:@soapbox/stickynotes@^0.4.0",
       "jsr:@std/assert@^0.225.1",

scripts/db-export.ts

@@ -102,7 +102,7 @@ async function exportEvents(args: ExportFilter) {
   let filter: NostrFilter = {};
   try {
     filter = buildFilter(args);
-  } catch (e) {
+  } catch (e: any) {
     die(1, e.message || e.toString());
   }
 

src/config.ts

@@ -209,6 +209,12 @@ class Conf {
   static get firehoseConcurrency(): number {
     return Math.ceil(Number(Deno.env.get('FIREHOSE_CONCURRENCY') ?? (Conf.pg.poolSize * 0.25)));
   }
+  /** Nostr event kinds of events to listen for on the firehose. */
+  static get firehoseKinds(): number[] {
+    return (Deno.env.get('FIREHOSE_KINDS') ?? '0, 1, 3, 5, 6, 7, 9735, 10002')
+      .split(/[, ]+/g)
+      .map(Number);
+  }
   /** Whether to enable Ditto cron jobs. */
   static get cronEnabled(): boolean {
     return optionalBooleanSchema.parse(Deno.env.get('CRON_ENABLED')) ?? true;
@@ -241,6 +247,30 @@ class Conf {
   static get zapSplitsEnabled(): boolean {
     return optionalBooleanSchema.parse(Deno.env.get('ZAP_SPLITS_ENABLED')) ?? false;
   }
+  /** Cache settings. */
+  static caches = {
+    /** NIP-05 cache settings. */
+    get nip05(): { max: number; ttl: number } {
+      return {
+        max: Number(Deno.env.get('DITTO_CACHE_NIP05_MAX') || 3000),
+        ttl: Number(Deno.env.get('DITTO_CACHE_NIP05_TTL') || 1 * 60 * 60 * 1000),
+      };
+    },
+    /** Favicon cache settings. */
+    get favicon(): { max: number; ttl: number } {
+      return {
+        max: Number(Deno.env.get('DITTO_CACHE_FAVICON_MAX') || 500),
+        ttl: Number(Deno.env.get('DITTO_CACHE_FAVICON_TTL') || 1 * 60 * 60 * 1000),
+      };
+    },
+    /** Link preview cache settings. */
+    get linkPreview(): { max: number; ttl: number } {
+      return {
+        max: Number(Deno.env.get('DITTO_CACHE_LINK_PREVIEW_MAX') || 1000),
+        ttl: Number(Deno.env.get('DITTO_CACHE_LINK_PREVIEW_TTL') || 12 * 60 * 60 * 1000),
+      };
+    },
+  };
 }
 
 const optionalBooleanSchema = z

src/controllers/api/streaming.ts

@@ -5,7 +5,11 @@ import { z } from 'zod';
 
 import { type AppController } from '@/app.ts';
 import { Conf } from '@/config.ts';
-import { streamingConnectionsGauge } from '@/metrics.ts';
+import {
+  streamingClientMessagesCounter,
+  streamingConnectionsGauge,
+  streamingServerMessagesCounter,
+} from '@/metrics.ts';
 import { MuteListPolicy } from '@/policies/MuteListPolicy.ts';
 import { getFeedPubkeys } from '@/queries.ts';
 import { hydrateEvents } from '@/storages/hydrate.ts';
@@ -61,6 +65,8 @@ const LIMITER_LIMIT = 100;
 
 const limiter = new TTLCache<string, number>();
 
+const connections = new Set<WebSocket>();
+
 const streamingController: AppController = async (c) => {
   const upgrade = c.req.header('upgrade');
   const token = c.req.header('sec-websocket-protocol');
@@ -94,6 +100,7 @@ const streamingController: AppController = async (c) => {
   function send(e: StreamingEvent) {
     if (socket.readyState === WebSocket.OPEN) {
       debug('send', e.event, e.payload);
+      streamingServerMessagesCounter.inc();
       socket.send(JSON.stringify(e));
     }
   }
@@ -126,7 +133,8 @@ const streamingController: AppController = async (c) => {
   }
 
   socket.onopen = async () => {
-    streamingConnectionsGauge.inc();
+    connections.add(socket);
+    streamingConnectionsGauge.set(connections.size);
 
     if (!stream) return;
     const topicFilter = await topicToFilter(stream, c.req.query(), pubkey);
@@ -169,6 +177,8 @@ const streamingController: AppController = async (c) => {
   };
 
   socket.onmessage = (e) => {
+    streamingClientMessagesCounter.inc();
+
     if (ip) {
       const count = limiter.get(ip) ?? 0;
       limiter.set(ip, count + 1, { ttl: LIMITER_WINDOW });
@@ -186,7 +196,8 @@ const streamingController: AppController = async (c) => {
   };
 
   socket.onclose = () => {
-    streamingConnectionsGauge.dec();
+    connections.delete(socket);
+    streamingConnectionsGauge.set(connections.size);
     controller.abort();
   };
 

src/controllers/metrics.ts

@@ -1,17 +1,32 @@
 import { register } from 'prom-client';
 
 import { AppController } from '@/app.ts';
-import { dbAvailableConnectionsGauge, dbPoolSizeGauge } from '@/metrics.ts';
+import {
+  dbAvailableConnectionsGauge,
+  dbPoolSizeGauge,
+  relayPoolRelaysSizeGauge,
+  relayPoolSubscriptionsSizeGauge,
+} from '@/metrics.ts';
 import { Storages } from '@/storages.ts';
 
 /** Prometheus/OpenMetrics controller. */
 export const metricsController: AppController = async (c) => {
   const db = await Storages.database();
+  const pool = await Storages.client();
 
   // Update some metrics at request time.
   dbPoolSizeGauge.set(db.poolSize);
   dbAvailableConnectionsGauge.set(db.availableConnections);
 
+  relayPoolRelaysSizeGauge.reset();
+  relayPoolSubscriptionsSizeGauge.reset();
+
+  for (const relay of pool.relays.values()) {
+    relayPoolRelaysSizeGauge.inc({ ready_state: relay.socket.readyState });
+    relayPoolSubscriptionsSizeGauge.inc(relay.subscriptions.length);
+  }
+
+  // Serve the metrics.
   const metrics = await register.metrics();
 
   const headers: HeadersInit = {

src/controllers/nostr/relay.ts

@@ -1,3 +1,4 @@
+import { Stickynotes } from '@soapbox/stickynotes';
 import TTLCache from '@isaacs/ttlcache';
 import {
   NostrClientCLOSE,
@@ -26,14 +27,18 @@ const LIMITER_LIMIT = 300;
 
 const limiter = new TTLCache<string, number>();
 
+/** Connections for metrics purposes. */
+const connections = new Set<WebSocket>();
+
+const console = new Stickynotes('ditto:relay');
+
 /** Set up the Websocket connection. */
 function connectStream(socket: WebSocket, ip: string | undefined) {
-  let opened = false;
   const controllers = new Map<string, AbortController>();
 
   socket.onopen = () => {
-    opened = true;
+    connections.add(socket);
-    relayConnectionsGauge.inc();
+    relayConnectionsGauge.set(connections.size);
   };
 
   socket.onmessage = (e) => {
@@ -63,9 +68,8 @@ function connectStream(socket: WebSocket, ip: string | undefined) {
   };
 
   socket.onclose = () => {
-    if (opened) {
+    connections.delete(socket);
-      relayConnectionsGauge.dec();
+    relayConnectionsGauge.set(connections.size);
-    }
 
     for (const controller of controllers.values()) {
       controller.abort();
@@ -103,7 +107,7 @@ function connectStream(socket: WebSocket, ip: string | undefined) {
       for (const event of await store.query(filters, { limit: FILTER_LIMIT, timeout: Conf.db.timeouts.relay })) {
         send(['EVENT', subId, event]);
       }
-    } catch (e) {
+    } catch (e: any) {
       if (e instanceof RelayError) {
         send(['CLOSED', subId, e.message]);
       } else if (e.message.includes('timeout')) {

src/db/DittoTables.ts

@@ -9,7 +9,6 @@ export interface DittoTables extends NPostgresSchema {
   event_stats: EventStatsRow;
   pubkey_domains: PubkeyDomainRow;
   event_zaps: EventZapRow;
-  author_search: AuthorSearch;
 }
 
 type NostrEventsRow = NPostgresSchema['nostr_events'] & {
@@ -21,6 +20,7 @@ interface AuthorStatsRow {
   followers_count: number;
   following_count: number;
   notes_count: number;
+  search: string;
 }
 
 interface EventStatsRow {
@@ -55,8 +55,3 @@ interface EventZapRow {
   amount_millisats: number;
   comment: string;
 }
-
-interface AuthorSearch {
-  pubkey: string;
-  search: string;
-}

src/db/migrations/034_move_author_search_to_author_stats.ts

@@ -0,0 +1,32 @@
+import { Kysely, sql } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .alterTable('author_stats')
+    .addColumn('search', 'text', (col) => col.notNull().defaultTo(''))
+    .execute();
+
+  await sql`CREATE INDEX author_stats_search_idx ON author_stats USING GIN (search gin_trgm_ops)`.execute(db);
+
+  await db.insertInto('author_stats')
+    .columns(['pubkey', 'search'])
+    .expression(
+      db.selectFrom('author_search')
+        .select(['pubkey', 'search']),
+    )
+    .onConflict((oc) =>
+      oc.column('pubkey')
+        .doUpdateSet((eb) => ({
+          search: eb.ref('excluded.search'),
+        }))
+    )
+    .execute();
+
+  await db.schema.dropIndex('author_search_search_idx').ifExists().execute();
+  await db.schema.dropTable('author_search').execute();
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema.dropIndex('author_stats_search_idx').ifExists().execute();
+  await db.schema.alterTable('author_stats').dropColumn('search').execute();
+}

src/db/migrations/035_author_stats_followers_index.ts

@@ -0,0 +1,17 @@
+import { Kysely } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .createIndex('author_stats_followers_count_idx')
+    .ifNotExists()
+    .on('author_stats')
+    .column('followers_count desc')
+    .execute();
+
+  // This index should have never been added, because pubkey is the primary key.
+  await db.schema.dropIndex('idx_author_stats_pubkey').ifExists().execute();
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema.dropIndex('author_stats_followers_count_idx').ifExists().execute();
+}

src/db/migrations/036_stats64.ts

@@ -0,0 +1,14 @@
+import { Kysely, sql } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.deleteFrom('event_stats').where(sql<number>`length(event_id)`, '>', 64).execute();
+  await db.deleteFrom('author_stats').where(sql<number>`length(pubkey)`, '>', 64).execute();
+
+  await db.schema.alterTable('event_stats').alterColumn('event_id', (col) => col.setDataType('char(64)')).execute();
+  await db.schema.alterTable('author_stats').alterColumn('pubkey', (col) => col.setDataType('char(64)')).execute();
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema.alterTable('event_stats').alterColumn('event_id', (col) => col.setDataType('text')).execute();
+  await db.schema.alterTable('author_stats').alterColumn('pubkey', (col) => col.setDataType('text')).execute();
+}

src/firehose.ts

@@ -19,7 +19,7 @@ const sem = new Semaphore(Conf.firehoseConcurrency);
 export async function startFirehose(): Promise<void> {
   const store = await Storages.client();
 
-  for await (const msg of store.req([{ kinds: [0, 1, 3, 5, 6, 7, 9735, 10002], limit: 0, since: nostrNow() }])) {
+  for await (const msg of store.req([{ kinds: Conf.firehoseKinds, limit: 0, since: nostrNow() }])) {
     if (msg[0] === 'EVENT') {
       const event = msg[2];
       console.debug(`NostrEvent<${event.kind}> ${event.id}`);

src/metrics.ts

@@ -17,10 +17,20 @@ export const streamingConnectionsGauge = new Gauge({
   help: 'Number of active connections to the streaming API',
 });
 
-export const fetchCounter = new Counter({
+export const streamingServerMessagesCounter = new Counter({
-  name: 'ditto_fetch_total',
+  name: 'ditto_streaming_server_messages_total',
+  help: 'Total number of messages sent from the streaming API',
+});
+
+export const streamingClientMessagesCounter = new Counter({
+  name: 'ditto_streaming_client_messages_total',
+  help: 'Total number of messages received by the streaming API',
+});
+
+export const fetchResponsesCounter = new Counter({
+  name: 'ditto_fetch_responses_total',
   help: 'Total number of fetch requests',
-  labelNames: ['method'],
+  labelNames: ['method', 'status'],
 });
 
 export const firehoseEventsCounter = new Counter({
@@ -84,3 +94,39 @@ export const dbQueryDurationHistogram = new Histogram({
   name: 'ditto_db_query_duration_ms',
   help: 'Duration of database queries',
 });
+
+export const cachedFaviconsSizeGauge = new Gauge({
+  name: 'ditto_cached_favicons_size',
+  help: 'Number of domain favicons in cache',
+});
+
+export const cachedLnurlsSizeGauge = new Gauge({
+  name: 'ditto_cached_lnurls_size',
+  help: 'Number of LNURL details in cache',
+});
+
+export const cachedNip05sSizeGauge = new Gauge({
+  name: 'ditto_cached_nip05s_size',
+  help: 'Number of NIP-05 results in cache',
+});
+
+export const cachedLinkPreviewSizeGauge = new Gauge({
+  name: 'ditto_cached_link_previews_size',
+  help: 'Number of link previews in cache',
+});
+
+export const internalSubscriptionsSizeGauge = new Gauge({
+  name: 'ditto_internal_subscriptions_size',
+  help: "Number of active subscriptions to Ditto's internal relay",
+});
+
+export const relayPoolRelaysSizeGauge = new Gauge({
+  name: 'ditto_relay_pool_relays_size',
+  help: 'Number of relays in the relay pool',
+  labelNames: ['ready_state'],
+});
+
+export const relayPoolSubscriptionsSizeGauge = new Gauge({
+  name: 'ditto_relay_pool_subscriptions_size',
+  help: 'Number of active subscriptions to the relay pool',
+});

src/pipeline.ts

@@ -1,5 +1,5 @@
 import { NKinds, NostrEvent, NSchema as n } from '@nostrify/nostrify';
-import Debug from '@soapbox/stickynotes/debug';
+import { Stickynotes } from '@soapbox/stickynotes';
 import ISO6391 from 'iso-639-1';
 import { Kysely, sql } from 'kysely';
 import lande from 'lande';
@@ -23,7 +23,7 @@ import { purifyEvent } from '@/utils/purify.ts';
 import { updateStats } from '@/utils/stats.ts';
 import { getTagSet } from '@/utils/tags.ts';
 
-const debug = Debug('ditto:pipeline');
+const console = new Stickynotes('ditto:pipeline');
 
 /**
  * Common pipeline function to process (and maybe store) events.
@@ -41,15 +41,15 @@ async function handleEvent(event: DittoEvent, signal: AbortSignal): Promise<void
   if (encounterEvent(event)) return;
   if (await existsInDB(event)) return;
 
-  debug(`NostrEvent<${event.kind}> ${event.id}`);
+  console.info(`NostrEvent<${event.kind}> ${event.id}`);
   pipelineEventsCounter.inc({ kind: event.kind });
 
   if (isProtectedEvent(event)) {
     throw new RelayError('invalid', 'protected event');
   }
 
-  if (event.kind !== 24133) {
+  if (event.kind !== 24133 && event.pubkey !== Conf.pubkey) {
-    await policyFilter(event);
+    await policyFilter(event, signal);
   }
 
   await hydrateEvent(event, signal);
@@ -62,29 +62,32 @@ async function handleEvent(event: DittoEvent, signal: AbortSignal): Promise<void
 
   const kysely = await Storages.kysely();
 
+  try {
     await storeEvent(purifyEvent(event), signal);
     await Promise.all([
       handleZaps(kysely, event),
       parseMetadata(event, signal),
       setLanguage(event),
-    generateSetEvents(event),
-    streamOut(event),
     ]);
+  } finally {
+    await generateSetEvents(event);
+    await streamOut(event);
+  }
 }
 
-async function policyFilter(event: NostrEvent): Promise<void> {
+async function policyFilter(event: NostrEvent, signal: AbortSignal): Promise<void> {
-  const debug = Debug('ditto:policy');
+  const console = new Stickynotes('ditto:policy');
 
   try {
-    const result = await policyWorker.call(event);
+    const result = await policyWorker.call(event, signal);
     policyEventsCounter.inc({ ok: String(result[2]) });
-    debug(JSON.stringify(result));
+    console.log(JSON.stringify(result));
     RelayError.assert(result);
   } catch (e) {
     if (e instanceof RelayError) {
       throw e;
     } else {
-      console.error('POLICY ERROR:', e);
+      console.error(e);
       throw new RelayError('blocked', 'policy error');
     }
   }
@@ -133,7 +136,7 @@ async function storeEvent(event: DittoEvent, signal?: AbortSignal): Promise<unde
   const store = await Storages.db();
 
   await store.transaction(async (store, kysely) => {
-    await updateStats({ event, store, kysely });
+    await updateStats({ event, store, kysely }).catch((e) => console.error(e));
     await store.event(event, { signal });
   });
 }
@@ -157,8 +160,8 @@ async function parseMetadata(event: NostrEvent, signal: AbortSignal): Promise<vo
     const search = result?.pubkey === event.pubkey ? [name, nip05].filter(Boolean).join(' ').trim() : name ?? '';
 
     if (search) {
-      await kysely.insertInto('author_search')
+      await kysely.insertInto('author_stats')
-        .values({ pubkey: event.pubkey, search })
+        .values({ pubkey: event.pubkey, search, followers_count: 0, following_count: 0, notes_count: 0 })
         .onConflict((oc) => oc.column('pubkey').doUpdateSet({ search }))
         .execute();
     }

src/signers/ConnectSigner.ts

@@ -30,7 +30,7 @@ export class ConnectSigner implements NostrSigner {
     const signer = await this.signer;
     try {
       return await signer.signEvent(event);
-    } catch (e) {
+    } catch (e: any) {
       if (e.name === 'AbortError') {
         throw new HTTPException(408, { message: 'The event was not signed quickly enough' });
       } else {
@@ -44,7 +44,7 @@ export class ConnectSigner implements NostrSigner {
       const signer = await this.signer;
       try {
         return await signer.nip04.encrypt(pubkey, plaintext);
-      } catch (e) {
+      } catch (e: any) {
         if (e.name === 'AbortError') {
           throw new HTTPException(408, {
             message: 'Text was not encrypted quickly enough',
@@ -59,7 +59,7 @@ export class ConnectSigner implements NostrSigner {
       const signer = await this.signer;
       try {
         return await signer.nip04.decrypt(pubkey, ciphertext);
-      } catch (e) {
+      } catch (e: any) {
         if (e.name === 'AbortError') {
           throw new HTTPException(408, {
             message: 'Text was not decrypted quickly enough',
@@ -76,7 +76,7 @@ export class ConnectSigner implements NostrSigner {
       const signer = await this.signer;
       try {
         return await signer.nip44.encrypt(pubkey, plaintext);
-      } catch (e) {
+      } catch (e: any) {
         if (e.name === 'AbortError') {
           throw new HTTPException(408, {
             message: 'Text was not encrypted quickly enough',
@@ -91,7 +91,7 @@ export class ConnectSigner implements NostrSigner {
       const signer = await this.signer;
       try {
         return await signer.nip44.decrypt(pubkey, ciphertext);
-      } catch (e) {
+      } catch (e: any) {
         if (e.name === 'AbortError') {
           throw new HTTPException(408, {
             message: 'Text was not decrypted quickly enough',

src/storages.ts

@@ -2,6 +2,7 @@
 import { Conf } from '@/config.ts';
 import { DittoDatabase } from '@/db/DittoDatabase.ts';
 import { DittoDB } from '@/db/DittoDB.ts';
+import { internalSubscriptionsSizeGauge } from '@/metrics.ts';
 import { AdminStore } from '@/storages/AdminStore.ts';
 import { EventsDB } from '@/storages/EventsDB.ts';
 import { SearchStore } from '@/storages/search-store.ts';
@@ -14,7 +15,7 @@ export class Storages {
   private static _db: Promise<EventsDB> | undefined;
   private static _database: Promise<DittoDatabase> | undefined;
   private static _admin: Promise<AdminStore> | undefined;
-  private static _client: Promise<NPool> | undefined;
+  private static _client: Promise<NPool<NRelay1>> | undefined;
   private static _pubsub: Promise<InternalRelay> | undefined;
   private static _search: Promise<SearchStore> | undefined;
 
@@ -61,13 +62,13 @@ export class Storages {
   /** Internal pubsub relay between controllers and the pipeline. */
   public static async pubsub(): Promise<InternalRelay> {
     if (!this._pubsub) {
-      this._pubsub = Promise.resolve(new InternalRelay());
+      this._pubsub = Promise.resolve(new InternalRelay({ gauge: internalSubscriptionsSizeGauge }));
     }
     return this._pubsub;
   }
 
   /** Relay pool storage. */
-  public static async client(): Promise<NPool> {
+  public static async client(): Promise<NPool<NRelay1>> {
     if (!this._client) {
       this._client = (async () => {
         const db = await this.db();

src/storages/EventsDB.ts

@@ -59,7 +59,7 @@ class EventsDB extends NPostgres {
   }
 
   /** Insert an event (and its tags) into the database. */
-  async event(event: NostrEvent, opts: { signal?: AbortSignal; timeout?: number } = {}): Promise<void> {
+  override async event(event: NostrEvent, opts: { signal?: AbortSignal; timeout?: number } = {}): Promise<void> {
     event = purifyEvent(event);
     this.console.debug('EVENT', JSON.stringify(event));
     dbEventsCounter.inc({ kind: event.kind });
@@ -72,7 +72,7 @@ class EventsDB extends NPostgres {
 
     try {
       await super.event(event, { ...opts, timeout: opts.timeout ?? this.opts.timeout });
-    } catch (e) {
+    } catch (e: any) {
       if (e.message === 'Cannot add a deleted event') {
         throw new RelayError('blocked', 'event deleted by user');
       } else if (e.message === 'Cannot replace an event with an older event') {
@@ -144,7 +144,7 @@ class EventsDB extends NPostgres {
     }
   }
 
-  protected getFilterQuery(trx: Kysely<NPostgresSchema>, filter: NostrFilter) {
+  protected override getFilterQuery(trx: Kysely<NPostgresSchema>, filter: NostrFilter) {
     if (filter.search) {
       const tokens = NIP50.parseInput(filter.search);
 
@@ -172,7 +172,7 @@ class EventsDB extends NPostgres {
   }
 
   /** Get events for filters from the database. */
-  async query(
+  override async query(
     filters: NostrFilter[],
     opts: { signal?: AbortSignal; timeout?: number; limit?: number } = {},
   ): Promise<NostrEvent[]> {
@@ -200,13 +200,13 @@ class EventsDB extends NPostgres {
   }
 
   /** Delete events based on filters from the database. */
-  async remove(filters: NostrFilter[], opts: { signal?: AbortSignal; timeout?: number } = {}): Promise<void> {
+  override async remove(filters: NostrFilter[], opts: { signal?: AbortSignal; timeout?: number } = {}): Promise<void> {
     this.console.debug('DELETE', JSON.stringify(filters));
     return super.remove(filters, { ...opts, timeout: opts.timeout ?? this.opts.timeout });
   }
 
   /** Get number of events that would be returned by filters. */
-  async count(
+  override async count(
     filters: NostrFilter[],
     opts: { signal?: AbortSignal; timeout?: number } = {},
   ): Promise<{ count: number; approximate: any }> {
@@ -218,7 +218,7 @@ class EventsDB extends NPostgres {
   }
 
   /** Return only the tags that should be indexed. */
-  static indexTags(event: NostrEvent): string[][] {
+  static override indexTags(event: NostrEvent): string[][] {
     const tagCounts: Record<string, number> = {};
 
     function getCount(name: string) {
@@ -325,7 +325,7 @@ class EventsDB extends NPostgres {
     return filters;
   }
 
-  async transaction(callback: (store: NPostgres, kysely: Kysely<any>) => Promise<void>): Promise<void> {
+  override async transaction(callback: (store: NPostgres, kysely: Kysely<any>) => Promise<void>): Promise<void> {
     return super.transaction((store, kysely) => callback(store, kysely as unknown as Kysely<DittoTables>));
   }
 }

src/storages/InternalRelay.ts

@@ -10,10 +10,15 @@ import {
 } from '@nostrify/nostrify';
 import { Machina } from '@nostrify/nostrify/utils';
 import { matchFilter } from 'nostr-tools';
+import { Gauge } from 'prom-client';
 
 import { DittoEvent } from '@/interfaces/DittoEvent.ts';
 import { purifyEvent } from '@/utils/purify.ts';
 
+interface InternalRelayOpts {
+  gauge?: Gauge;
+}
+
 /**
  * PubSub event store for streaming events within the application.
  * The pipeline should push events to it, then anything in the application can subscribe to it.
@@ -21,6 +26,8 @@ import { purifyEvent } from '@/utils/purify.ts';
 export class InternalRelay implements NRelay {
   private subs = new Map<string, { filters: NostrFilter[]; machina: Machina<NostrEvent> }>();
 
+  constructor(private opts: InternalRelayOpts = {}) {}
+
   async *req(
     filters: NostrFilter[],
     opts?: { signal?: AbortSignal },
@@ -31,6 +38,7 @@ export class InternalRelay implements NRelay {
     yield ['EOSE', id];
 
     this.subs.set(id, { filters, machina });
+    this.opts.gauge?.set(this.subs.size);
 
     try {
       for await (const event of machina) {
@@ -38,6 +46,7 @@ export class InternalRelay implements NRelay {
       }
     } finally {
       this.subs.delete(id);
+      this.opts.gauge?.set(this.subs.size);
     }
   }
 
@@ -70,4 +79,8 @@ export class InternalRelay implements NRelay {
   async query(): Promise<NostrEvent[]> {
     return [];
   }
+
+  async close(): Promise<void> {
+    return Promise.resolve();
+  }
 }

src/storages/hydrate.ts

@@ -385,6 +385,7 @@ async function gatherAuthorStats(
     followers_count: Math.max(0, row.followers_count),
     following_count: Math.max(0, row.following_count),
     notes_count: Math.max(0, row.notes_count),
+    search: row.search,
   }));
 }
 

src/trends.ts

@@ -106,7 +106,7 @@ export async function updateTrendingTags(
 
     await handleEvent(label, signal);
     console.info(`Trending ${l} updated.`);
-  } catch (e) {
+  } catch (e: any) {
     console.error(`Error updating trending ${l}: ${e.message}`);
   }
 }

src/utils/SimpleLRU.test.ts

@@ -0,0 +1,21 @@
+import { SimpleLRU } from '@/utils/SimpleLRU.ts';
+import { assertEquals, assertRejects } from '@std/assert';
+
+Deno.test("SimpleLRU doesn't repeat failed calls", async () => {
+  let calls = 0;
+
+  const cache = new SimpleLRU(
+    // deno-lint-ignore require-await
+    async () => {
+      calls++;
+      throw new Error('gg');
+    },
+    { max: 100 },
+  );
+
+  await assertRejects(() => cache.fetch('foo'));
+  assertEquals(calls, 1);
+
+  await assertRejects(() => cache.fetch('foo'));
+  assertEquals(calls, 1);
+});

src/utils/SimpleLRU.ts

@@ -1,6 +1,7 @@
 // deno-lint-ignore-file ban-types
 
 import { LRUCache } from 'lru-cache';
+import { type Gauge } from 'prom-client';
 
 type FetchFn<K extends {}, V extends {}, O extends {}> = (key: K, opts: O) => Promise<V>;
 
@@ -8,6 +9,10 @@ interface FetchFnOpts {
   signal?: AbortSignal | null;
 }
 
+type SimpleLRUOpts<K extends {}, V extends {}> = LRUCache.Options<K, V, void> & {
+  gauge?: Gauge;
+};
+
 export class SimpleLRU<
   K extends {},
   V extends {},
@@ -15,18 +20,28 @@ export class SimpleLRU<
 > {
   protected cache: LRUCache<K, V, void>;
 
-  constructor(fetchFn: FetchFn<K, V, { signal: AbortSignal }>, opts: LRUCache.Options<K, V, void>) {
+  constructor(fetchFn: FetchFn<K, V, { signal: AbortSignal }>, private opts: SimpleLRUOpts<K, V>) {
     this.cache = new LRUCache({
-      fetchMethod: (key, _staleValue, { signal }) => fetchFn(key, { signal: signal as unknown as AbortSignal }),
+      async fetchMethod(key, _staleValue, { signal }) {
+        try {
+          return await fetchFn(key, { signal: signal as unknown as AbortSignal });
+        } catch {
+          return null as unknown as V;
+        }
+      },
       ...opts,
     });
   }
 
   async fetch(key: K, opts?: O): Promise<V> {
     const result = await this.cache.fetch(key, opts);
-    if (result === undefined) {
+
+    this.opts.gauge?.set(this.cache.size);
+
+    if (result === undefined || result === null) {
       throw new Error('SimpleLRU: fetch failed');
     }
+
     return result;
   }
 

src/utils/favicon.ts

@@ -2,8 +2,9 @@ import { DOMParser } from '@b-fuze/deno-dom';
 import Debug from '@soapbox/stickynotes/debug';
 import tldts from 'tldts';
 
+import { Conf } from '@/config.ts';
+import { cachedFaviconsSizeGauge } from '@/metrics.ts';
 import { SimpleLRU } from '@/utils/SimpleLRU.ts';
-import { Time } from '@/utils/time.ts';
 import { fetchWorker } from '@/workers/fetch.ts';
 
 const debug = Debug('ditto:favicon');
@@ -37,7 +38,7 @@ const faviconCache = new SimpleLRU<string, URL>(
 
     throw new Error(`Favicon not found: ${key}`);
   },
-  { max: 500, ttl: Time.hours(1) },
+  { ...Conf.caches.favicon, gauge: cachedFaviconsSizeGauge },
 );
 
 export { faviconCache };

src/utils/lnurl.ts

@@ -1,6 +1,7 @@
 import { LNURL, LNURLDetails } from '@nostrify/nostrify/ln';
 import Debug from '@soapbox/stickynotes/debug';
 
+import { cachedLnurlsSizeGauge } from '@/metrics.ts';
 import { SimpleLRU } from '@/utils/SimpleLRU.ts';
 import { Time } from '@/utils/time.ts';
 import { fetchWorker } from '@/workers/fetch.ts';
@@ -20,7 +21,7 @@ const lnurlCache = new SimpleLRU<string, LNURLDetails>(
       throw e;
     }
   },
-  { max: 1000, ttl: Time.minutes(30) },
+  { max: 1000, ttl: Time.minutes(30), gauge: cachedLnurlsSizeGauge },
 );
 
 /** Get an LNURL from a lud06 or lud16. */

src/utils/nip05.ts

@@ -4,9 +4,9 @@ import Debug from '@soapbox/stickynotes/debug';
 import tldts from 'tldts';
 
 import { Conf } from '@/config.ts';
+import { cachedNip05sSizeGauge } from '@/metrics.ts';
 import { Storages } from '@/storages.ts';
 import { SimpleLRU } from '@/utils/SimpleLRU.ts';
-import { Time } from '@/utils/time.ts';
 import { Nip05, parseNip05 } from '@/utils.ts';
 import { fetchWorker } from '@/workers/fetch.ts';
 
@@ -43,7 +43,7 @@ const nip05Cache = new SimpleLRU<string, nip19.ProfilePointer>(
       throw e;
     }
   },
-  { max: 500, ttl: Time.hours(1) },
+  { ...Conf.caches.nip05, gauge: cachedNip05sSizeGauge },
 );
 
 async function localNip05Lookup(store: NStore, localpart: string): Promise<nip19.ProfilePointer | undefined> {

src/utils/note.test.ts

@@ -36,6 +36,27 @@ Deno.test('parseNoteContent parses mentions with apostrophes', () => {
   );
 });
 
+Deno.test('parseNoteContent parses mentions with commas', () => {
+  const { html } = parseNoteContent(
+    `Sim. Hi nostr:npub1q3sle0kvfsehgsuexttt3ugjd8xdklxfwwkh559wxckmzddywnws6cd26p and nostr:npub1gujeqakgt7fyp6zjggxhyy7ft623qtcaay5lkc8n8gkry4cvnrzqd3f67z, any chance to have Cobrafuma as PWA?`,
+    [{
+      id: '0461fcbecc4c3374439932d6b8f11269ccdb7cc973ad7a50ae362db135a474dd',
+      username: 'alex',
+      acct: 'alex@gleasonator.dev',
+      url: 'https://gleasonator.dev/@alex',
+    }, {
+      id: '47259076c85f9240e852420d7213c95e95102f1de929fb60f33a2c32570c98c4',
+      username: 'patrick',
+      acct: 'patrick@patrickdosreis.com',
+      url: 'https://gleasonator.dev/@patrick@patrickdosreis.com',
+    }],
+  );
+  assertEquals(
+    html,
+    'Sim. Hi <span class="h-card"><a class="u-url mention" href="https://gleasonator.dev/@alex" rel="ugc">@<span>alex@gleasonator.dev</span></a></span> and <span class="h-card"><a class="u-url mention" href="https://gleasonator.dev/@patrick@patrickdosreis.com" rel="ugc">@<span>patrick@patrickdosreis.com</span></a></span>, any chance to have Cobrafuma as PWA?',
+  );
+});
+
 Deno.test("parseNoteContent doesn't parse invalid nostr URIs", () => {
   const { html } = parseNoteContent('nip19 has URIs like nostr:npub and nostr:nevent, etc.', []);
   assertEquals(html, 'nip19 has URIs like nostr:npub and nostr:nevent, etc.');

src/utils/search.test.ts

@@ -6,14 +6,17 @@ import { getPubkeysBySearch } from '@/utils/search.ts';
 Deno.test('fuzzy search works', async () => {
   await using db = await createTestDB();
 
-  await db.kysely.insertInto('author_search').values({
+  await db.kysely.insertInto('author_stats').values({
     pubkey: '47259076c85f9240e852420d7213c95e95102f1de929fb60f33a2c32570c98c4',
     search: 'patrickReiis patrickdosreis.com',
+    notes_count: 0,
+    followers_count: 0,
+    following_count: 0,
   }).execute();
 
   assertEquals(await getPubkeysBySearch(db.kysely, { q: 'pat rick', limit: 1, followedPubkeys: new Set() }), new Set());
   assertEquals(
-    await getPubkeysBySearch(db.kysely, { q: 'patrick dos reis', limit: 1, followedPubkeys: new Set() }),
+    await getPubkeysBySearch(db.kysely, { q: 'patrick dosreis', limit: 1, followedPubkeys: new Set() }),
     new Set([
       '47259076c85f9240e852420d7213c95e95102f1de929fb60f33a2c32570c98c4',
     ]),

src/utils/search.ts

@@ -10,13 +10,14 @@ export async function getPubkeysBySearch(
   const { q, limit, followedPubkeys } = opts;
 
   let query = kysely
-    .selectFrom('author_search')
+    .selectFrom('author_stats')
     .select((eb) => [
       'pubkey',
       'search',
       eb.fn('word_similarity', [sql`${q}`, 'search']).as('sml'),
     ])
-    .where(() => sql`${q} % search`)
+    .where(() => sql`${q} <% search`)
+    .orderBy(['followers_count desc'])
     .orderBy(['sml desc', 'search'])
     .limit(limit);
 

src/utils/stats.test.ts

@@ -171,7 +171,16 @@ Deno.test('countAuthorStats counts author stats from the database', async () =>
   await db.store.event(genEvent({ kind: 1, content: 'yolo' }, sk));
   await db.store.event(genEvent({ kind: 3, tags: [['p', pubkey]] }));
 
-  const stats = await countAuthorStats(db.store, pubkey);
+  await db.kysely.insertInto('author_stats').values({
+    pubkey,
+    search: 'Yolo Lolo',
+    notes_count: 0,
+    followers_count: 0,
+    following_count: 0,
+  }).onConflict((oc) => oc.column('pubkey').doUpdateSet({ 'search': 'baka' }))
+    .execute();
+
+  const stats = await countAuthorStats({ store: db.store, pubkey, kysely: db.kysely });
 
   assertEquals(stats!.notes_count, 2);
   assertEquals(stats!.followers_count, 1);

src/utils/stats.ts

@@ -194,6 +194,7 @@ export async function updateAuthorStats(
     followers_count: 0,
     following_count: 0,
     notes_count: 0,
+    search: '',
   };
 
   const prev = await kysely
@@ -268,20 +269,27 @@ export async function updateEventStats(
 
 /** Calculate author stats from the database. */
 export async function countAuthorStats(
-  store: SetRequired<NStore, 'count'>,
+  { pubkey, store }: RefreshAuthorStatsOpts,
-  pubkey: string,
 ): Promise<DittoTables['author_stats']> {
-  const [{ count: followers_count }, { count: notes_count }, [followList]] = await Promise.all([
+  const [{ count: followers_count }, { count: notes_count }, [followList], [kind0]] = await Promise.all([
     store.count([{ kinds: [3], '#p': [pubkey] }]),
     store.count([{ kinds: [1], authors: [pubkey] }]),
     store.query([{ kinds: [3], authors: [pubkey], limit: 1 }]),
+    store.query([{ kinds: [0], authors: [pubkey], limit: 1 }]),
   ]);
+  let search: string = '';
+  const metadata = n.json().pipe(n.metadata()).catch({}).safeParse(kind0?.content);
+  if (metadata.success) {
+    const { name, nip05 } = metadata.data;
+    search = [name, nip05].filter(Boolean).join(' ').trim();
+  }
 
   return {
     pubkey,
     followers_count,
     following_count: getTagSet(followList?.tags ?? [], 'p').size,
     notes_count,
+    search,
   };
 }
 
@@ -295,7 +303,7 @@ export interface RefreshAuthorStatsOpts {
 export async function refreshAuthorStats(
   { pubkey, kysely, store }: RefreshAuthorStatsOpts,
 ): Promise<DittoTables['author_stats']> {
-  const stats = await countAuthorStats(store, pubkey);
+  const stats = await countAuthorStats({ store, pubkey, kysely });
 
   await kysely.insertInto('author_stats')
     .values(stats)

src/utils/unfurl.ts

@@ -5,7 +5,7 @@ import { unfurl } from 'unfurl.js';
 
 import { Conf } from '@/config.ts';
 import { PreviewCard } from '@/entities/PreviewCard.ts';
-import { Time } from '@/utils/time.ts';
+import { cachedLinkPreviewSizeGauge } from '@/metrics.ts';
 import { fetchWorker } from '@/workers/fetch.ts';
 
 const debug = Debug('ditto:unfurl');
@@ -54,10 +54,7 @@ async function unfurlCard(url: string, signal: AbortSignal): Promise<PreviewCard
 }
 
 /** TTL cache for preview cards. */
-const previewCardCache = new TTLCache<string, Promise<PreviewCard | null>>({
+const previewCardCache = new TTLCache<string, Promise<PreviewCard | null>>(Conf.caches.linkPreview);
-  ttl: Time.hours(12),
-  max: 500,
-});
 
 /** Unfurl card from cache if available, otherwise fetch it. */
 function unfurlCardCached(url: string, signal = AbortSignal.timeout(1000)): Promise<PreviewCard | null> {
@@ -67,6 +64,7 @@ function unfurlCardCached(url: string, signal = AbortSignal.timeout(1000)): Prom
   } else {
     const card = unfurlCard(url, signal);
     previewCardCache.set(url, card);
+    cachedLinkPreviewSizeGauge.set(previewCardCache.size);
     return card;
   }
 }

src/workers/fetch.ts

@@ -3,7 +3,7 @@ import * as Comlink from 'comlink';
 import { FetchWorker } from './fetch.worker.ts';
 import './handlers/abortsignal.ts';
 
-import { fetchCounter } from '@/metrics.ts';
+import { fetchResponsesCounter } from '@/metrics.ts';
 
 const worker = new Worker(new URL('./fetch.worker.ts', import.meta.url), { type: 'module' });
 const client = Comlink.wrap<typeof FetchWorker>(worker);
@@ -23,11 +23,18 @@ const ready = new Promise<void>((resolve) => {
  */
 const fetchWorker: typeof fetch = async (...args) => {
   await ready;
+
   const [url, init] = serializeFetchArgs(args);
   const { body, signal, ...rest } = init;
-  fetchCounter.inc({ method: init.method });
+
   const result = await client.fetch(url, { ...rest, body: await prepareBodyForWorker(body) }, signal);
-  return new Response(...result);
+  const response = new Response(...result);
+
+  const { method } = init;
+  const { status } = response;
+  fetchResponsesCounter.inc({ method, status });
+
+  return response;
 };
 
 /** Take arguments to `fetch`, and turn them into something we can send over Comlink. */

src/workers/policy.ts

@@ -4,6 +4,8 @@ import * as Comlink from 'comlink';
 import { Conf } from '@/config.ts';
 import type { CustomPolicy } from '@/workers/policy.worker.ts';
 
+import '@/workers/handlers/abortsignal.ts';
+
 const console = new Stickynotes('ditto:policy');
 
 export const policyWorker = Comlink.wrap<CustomPolicy>(
@@ -31,7 +33,7 @@ try {
     adminPubkey: Conf.pubkey,
   });
   console.debug(`Using custom policy: ${Conf.policy}`);
-} catch (e) {
+} catch (e: any) {
   if (e.message.includes('Module not found')) {
     console.debug('Custom policy not found <https://docs.soapbox.pub/ditto/policies/>');
   } else {

src/workers/policy.worker.ts

@@ -1,11 +1,13 @@
 import 'deno-safe-fetch/load';
 import { NostrEvent, NostrRelayOK, NPolicy } from '@nostrify/nostrify';
-import { NoOpPolicy, ReadOnlyPolicy } from '@nostrify/nostrify/policies';
+import { NoOpPolicy, ReadOnlyPolicy } from '@nostrify/policies';
 import * as Comlink from 'comlink';
 
 import { DittoDB } from '@/db/DittoDB.ts';
 import { EventsDB } from '@/storages/EventsDB.ts';
 
+import '@/workers/handlers/abortsignal.ts';
+
 // @ts-ignore Don't try to access the env from this worker.
 Deno.env = new Map<string, string>();
 
@@ -25,8 +27,8 @@ export class CustomPolicy implements NPolicy {
   private policy: NPolicy = new ReadOnlyPolicy();
 
   // deno-lint-ignore require-await
-  async call(event: NostrEvent): Promise<NostrRelayOK> {
+  async call(event: NostrEvent, signal?: AbortSignal): Promise<NostrRelayOK> {
-    return this.policy.call(event);
+    return this.policy.call(event, signal);
   }
 
   async init({ path, cwd, databaseUrl, adminPubkey }: PolicyInit): Promise<void> {
@@ -45,7 +47,7 @@ export class CustomPolicy implements NPolicy {
     try {
       const Policy = (await import(path)).default;
       this.policy = new Policy({ store });
-    } catch (e) {
+    } catch (e: any) {
       if (e.message.includes('Module not found')) {
         this.policy = new NoOpPolicy();
       }