perf (backend): store antenna cache in memory

packages/backend-rs/index.d.ts

@@ -1352,6 +1352,7 @@ export interface Webhook {
   latestStatus: number | null
 }
 export function updateAntennasOnNewNote(note: Note, noteAuthor: Acct, noteMutedUsers: Array<string>): Promise<void>
+export function updateAntennaCache(): Promise<void>
 export function watchNote(watcherId: string, noteAuthorId: string, noteId: string): Promise<void>
 export function unwatchNote(watcherId: string, noteId: string): Promise<void>
 export enum PushNotificationKind {

packages/backend-rs/index.js

@@ -310,7 +310,7 @@ if (!nativeBinding) {
   throw new Error(`Failed to load native binding`)
 }
 
-const { SECOND, MINUTE, HOUR, DAY, USER_ONLINE_THRESHOLD, USER_ACTIVE_THRESHOLD, FILE_TYPE_BROWSERSAFE, fetchMeta, updateMetaCache, metaToPugArgs, loadConfig, stringToAcct, acctToString, fetchNodeinfo, nodeinfo_2_1, nodeinfo_2_0, Protocol, Inbound, Outbound, greet, initializeRustLogger, showServerInfo, isBlockedServer, isSilencedServer, isAllowedServer, checkWordMute, getFullApAccount, isSelfHost, isSameOrigin, extractHost, toPuny, isUnicodeEmoji, sqlLikeEscape, safeForSql, formatMilliseconds, getImageSizeFromUrl, getNoteSummary, isQuote, isSafeUrl, latestVersion, toMastodonId, fromMastodonId, nyaify, hashPassword, verifyPassword, isOldPasswordAlgorithm, decodeReaction, countReactions, toDbReaction, removeOldAttestationChallenges, cpuInfo, cpuUsage, memoryUsage, storageUsage, AntennaSrc, DriveFileUsageHint, MutedNoteReason, NoteVisibility, NotificationType, PageVisibility, PollNoteVisibility, RelayStatus, UserEmojiModPerm, UserProfileFfvisibility, UserProfileMutingNotificationTypes, updateAntennasOnNewNote, watchNote, unwatchNote, PushNotificationKind, sendPushNotification, publishToChannelStream, publishToChatStream, ChatIndexEvent, publishToChatIndexStream, publishToBroadcastStream, publishToGroupChatStream, publishToModerationStream, ChatEvent, getTimestamp, genId, genIdAt, generateSecureRandomString, generateUserToken } = nativeBinding
+const { SECOND, MINUTE, HOUR, DAY, USER_ONLINE_THRESHOLD, USER_ACTIVE_THRESHOLD, FILE_TYPE_BROWSERSAFE, fetchMeta, updateMetaCache, metaToPugArgs, loadConfig, stringToAcct, acctToString, fetchNodeinfo, nodeinfo_2_1, nodeinfo_2_0, Protocol, Inbound, Outbound, greet, initializeRustLogger, showServerInfo, isBlockedServer, isSilencedServer, isAllowedServer, checkWordMute, getFullApAccount, isSelfHost, isSameOrigin, extractHost, toPuny, isUnicodeEmoji, sqlLikeEscape, safeForSql, formatMilliseconds, getImageSizeFromUrl, getNoteSummary, isQuote, isSafeUrl, latestVersion, toMastodonId, fromMastodonId, nyaify, hashPassword, verifyPassword, isOldPasswordAlgorithm, decodeReaction, countReactions, toDbReaction, removeOldAttestationChallenges, cpuInfo, cpuUsage, memoryUsage, storageUsage, AntennaSrc, DriveFileUsageHint, MutedNoteReason, NoteVisibility, NotificationType, PageVisibility, PollNoteVisibility, RelayStatus, UserEmojiModPerm, UserProfileFfvisibility, UserProfileMutingNotificationTypes, updateAntennasOnNewNote, updateAntennaCache, watchNote, unwatchNote, PushNotificationKind, sendPushNotification, publishToChannelStream, publishToChatStream, ChatIndexEvent, publishToChatIndexStream, publishToBroadcastStream, publishToGroupChatStream, publishToModerationStream, ChatEvent, getTimestamp, genId, genIdAt, generateSecureRandomString, generateUserToken } = nativeBinding
 
 module.exports.SECOND = SECOND
 module.exports.MINUTE = MINUTE
@@ -378,6 +378,7 @@ module.exports.UserEmojiModPerm = UserEmojiModPerm
 module.exports.UserProfileFfvisibility = UserProfileFfvisibility
 module.exports.UserProfileMutingNotificationTypes = UserProfileMutingNotificationTypes
 module.exports.updateAntennasOnNewNote = updateAntennasOnNewNote
+module.exports.updateAntennaCache = updateAntennaCache
 module.exports.watchNote = watchNote
 module.exports.unwatchNote = unwatchNote
 module.exports.PushNotificationKind = PushNotificationKind

packages/backend-rs/src/service/antenna/cache.rs

@@ -0,0 +1,27 @@
+//! In-memory antennas cache handler
+
+use crate::{database::db_conn, model::entity::antenna};
+use sea_orm::prelude::*;
+use std::sync::Mutex;
+
+static CACHE: Mutex<Option<Vec<antenna::Model>>> = Mutex::new(None);
+
+fn set(antennas: &[antenna::Model]) {
+    let _ = CACHE
+        .lock()
+        .map(|mut cache| *cache = Some(antennas.to_owned()));
+}
+
+pub(super) async fn update() -> Result<Vec<antenna::Model>, DbErr> {
+    tracing::debug!("updating cache");
+    let antennas = antenna::Entity::find().all(db_conn().await?).await?;
+    set(&antennas);
+    Ok(antennas)
+}
+
+pub(super) async fn get() -> Result<Vec<antenna::Model>, DbErr> {
+    if let Some(cache) = CACHE.lock().ok().and_then(|cache| cache.clone()) {
+        return Ok(cache);
+    }
+    update().await
+}

packages/backend-rs/src/service/antenna/mod.rs

@@ -1,2 +1,4 @@
+mod cache;
 mod check_hit;
 pub mod process_new_note;
+pub mod update;

packages/backend-rs/src/service/antenna/process_new_note.rs

@@ -1,10 +1,13 @@
 use crate::{
-    database::{cache, db_conn, redis_conn, redis_key, RedisConnError},
+    database::{cache, redis_conn, redis_key, RedisConnError},
     federation::acct::Acct,
     misc::get_note_all_texts::{all_texts, PartialNoteToElaborate},
-    model::entity::{antenna, note},
+    model::entity::note,
-    service::antenna::check_hit::{check_hit_antenna, AntennaCheckError},
+    service::{
-    service::stream,
+        antenna,
+        antenna::check_hit::{check_hit_antenna, AntennaCheckError},
+        stream,
+    },
     util::id::{get_timestamp, InvalidIdError},
 };
 use redis::{streams::StreamMaxlen, AsyncCommands, RedisError};
@@ -32,20 +35,6 @@ pub enum Error {
 // https://github.com/napi-rs/napi-rs/issues/2060
 type Note = note::Model;
 
-// TODO?: it might be better to store this directly in memory
-// (like fetch_meta) instead of Redis as it's used so much
-async fn antennas() -> Result<Vec<antenna::Model>, Error> {
-    const CACHE_KEY: &str = "antennas";
-
-    if let Some(antennas) = cache::get::<Vec<antenna::Model>>(CACHE_KEY).await? {
-        Ok(antennas)
-    } else {
-        let antennas = antenna::Entity::find().all(db_conn().await?).await?;
-        cache::set(CACHE_KEY, &antennas, 5 * 60).await?;
-        Ok(antennas)
-    }
-}
-
 #[crate::export]
 pub async fn update_antennas_on_new_note(
     note: Note,
@@ -67,7 +56,7 @@ pub async fn update_antennas_on_new_note(
     .await?;
 
     // TODO: do this in parallel
-    for antenna in antennas().await?.iter() {
+    for antenna in antenna::cache::get().await?.iter() {
         if note_muted_users.contains(&antenna.user_id) {
             continue;
         }

packages/backend-rs/src/service/antenna/update.rs

@@ -0,0 +1,7 @@
+//! This module is (currently) used in the TypeScript backend only.
+
+#[crate::ts_export]
+pub async fn update_antenna_cache() -> Result<(), sea_orm::DbErr> {
+    super::cache::update().await?;
+    Ok(())
+}

packages/backend/src/server/api/endpoints/antennas/create.ts

@@ -1,5 +1,5 @@
 import define from "@/server/api/define.js";
-import { fetchMeta, genIdAt } from "backend-rs";
+import { fetchMeta, genIdAt, updateAntennaCache } from "backend-rs";
 import { Antennas, UserLists, UserGroupJoinings } from "@/models/index.js";
 import { ApiError } from "@/server/api/error.js";
 import { publishInternalEvent } from "@/services/stream.js";
@@ -173,6 +173,7 @@ export default define(meta, paramDef, async (ps, user) => {
 	}).then((x) => Antennas.findOneByOrFail(x.identifiers[0]));
 	
 	publishInternalEvent("antennaCreated", antenna);
+	await updateAntennaCache();
 
 	return await Antennas.pack(antenna);
 });

packages/backend/src/server/api/endpoints/antennas/delete.ts

@@ -2,6 +2,7 @@ import define from "@/server/api/define.js";
 import { ApiError } from "@/server/api/error.js";
 import { Antennas } from "@/models/index.js";
 import { publishInternalEvent } from "@/services/stream.js";
+import { updateAntennaCache } from "backend-rs";
 
 export const meta = {
 	tags: ["antennas"],
@@ -40,4 +41,5 @@ export default define(meta, paramDef, async (ps, user) => {
 	await Antennas.delete(antenna.id);
 
 	publishInternalEvent("antennaDeleted", antenna);
+	await updateAntennaCache();
 });

packages/backend/src/server/api/endpoints/antennas/update.ts

@@ -2,6 +2,7 @@ import define from "@/server/api/define.js";
 import { ApiError } from "@/server/api/error.js";
 import { Antennas, UserLists, UserGroupJoinings } from "@/models/index.js";
 import { publishInternalEvent } from "@/services/stream.js";
+import { updateAntennaCache } from "backend-rs";
 
 export const meta = {
 	tags: ["antennas"],
@@ -166,6 +167,7 @@ export default define(meta, paramDef, async (ps, user) => {
 		"antennaUpdated",
 		await Antennas.findOneByOrFail({ id: antenna.id }),
 	);
+	await updateAntennaCache();
 
 	return await Antennas.pack(antenna.id);
 });