enhance(backend): RedisへのTLのキャッシュをオフにできるように

CHANGELOG.md

@@ -25,6 +25,7 @@
 - Fix: 投稿フォームでのユーザー変更がプレビューに反映されない問題を修正
 
 ### Server
+- Enhance: RedisへのTLのキャッシュをオフにできるように
 - Fix: リストTLに自分のフォロワー限定投稿が含まれない問題を修正
 - Fix: ローカルタイムラインに投稿者自身の投稿への返信が含まれない問題を修正
 

locales/index.d.ts

@@ -1190,6 +1190,7 @@ export interface Locale {
         "manifestJsonOverride": string;
         "shortName": string;
         "shortNameDescription": string;
+        "fanoutTimelineDescription": string;
     };
     "_accountMigration": {
         "moveFrom": string;

locales/ja-JP.yml

@@ -1188,6 +1188,7 @@ _serverSettings:
   manifestJsonOverride: "manifest.jsonのオーバーライド"
   shortName: "略称"
   shortNameDescription: "サーバーの正式名称が長い場合に、代わりに表示することのできる略称や通称。"
+  fanoutTimelineDescription: "有効にすると、各種タイムラインを取得する際のパフォーマンスが大幅に向上し、データベースへの負荷を軽減することが可能です。ただし、Redisのメモリ使用量は増加します。サーバーのメモリ容量が少ない場合、または動作が不安定な場合は無効にすることができます。"
 
 _accountMigration:
   moveFrom: "別のアカウントからこのアカウントに移行"

packages/backend/migration/1698041201306-enable-ftt.js

@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class EnableFtt1698041201306 {
+    name = 'EnableFtt1698041201306'
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "meta" ADD "enableFanoutTimeline" boolean NOT NULL DEFAULT true`);
+    }
+
+    async down(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "meta" DROP COLUMN "enableFanoutTimeline"`);
+    }
+}

packages/backend/src/core/NoteCreateService.ts

@@ -825,6 +825,7 @@ export class NoteCreateService implements OnApplicationShutdown {
 	@bindThis
 	private async pushToTl(note: MiNote, user: { id: MiUser['id']; host: MiUser['host']; }) {
 		const meta = await this.metaService.fetch();
+		if (!meta.enableFanoutTimeline) return;
 
 		const r = this.redisForTimelines.pipeline();
 

packages/backend/src/core/QueryService.ts

@@ -40,7 +40,7 @@ export class QueryService {
 	) {
 	}
 
-	public makePaginationQuery<T extends ObjectLiteral>(q: SelectQueryBuilder<T>, sinceId?: string, untilId?: string, sinceDate?: number, untilDate?: number): SelectQueryBuilder<T> {
+	public makePaginationQuery<T extends ObjectLiteral>(q: SelectQueryBuilder<T>, sinceId?: string | null, untilId?: string | null, sinceDate?: number | null, untilDate?: number | null): SelectQueryBuilder<T> {
 		if (sinceId && untilId) {
 			q.andWhere(`${q.alias}.id > :sinceId`, { sinceId: sinceId });
 			q.andWhere(`${q.alias}.id < :untilId`, { untilId: untilId });

packages/backend/src/models/Meta.ts

@@ -489,6 +489,11 @@ export class MiMeta {
 	})
 	public preservedUsernames: string[];
 
+	@Column('boolean', {
+		default: true,
+	})
+	public enableFanoutTimeline: boolean;
+
 	@Column('integer', {
 		default: 300,
 	})

packages/backend/src/server/api/endpoints/admin/meta.ts

@@ -106,11 +106,11 @@ export const meta = {
 				optional: false, nullable: false,
 			},
 			silencedHosts: {
-				type: "array",
+				type: 'array',
 				optional: true,
 				nullable: false,
 				items: {
-					type: "string",
+					type: 'string',
 					optional: false,
 					nullable: false,
 				},
@@ -291,6 +291,10 @@ export const meta = {
 				type: 'object',
 				optional: false, nullable: false,
 			},
+			enableFanoutTimeline: {
+				type: 'boolean',
+				optional: false, nullable: false,
+			},
 			perLocalUserUserTimelineCacheMax: {
 				type: 'number',
 				optional: false, nullable: false,
@@ -419,6 +423,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				enableIdenticonGeneration: instance.enableIdenticonGeneration,
 				policies: { ...DEFAULT_POLICIES, ...instance.policies },
 				manifestJsonOverride: instance.manifestJsonOverride,
+				enableFanoutTimeline: instance.enableFanoutTimeline,
 				perLocalUserUserTimelineCacheMax: instance.perLocalUserUserTimelineCacheMax,
 				perRemoteUserUserTimelineCacheMax: instance.perRemoteUserUserTimelineCacheMax,
 				perUserHomeTimelineCacheMax: instance.perUserHomeTimelineCacheMax,

packages/backend/src/server/api/endpoints/admin/update-meta.ts

@@ -120,6 +120,7 @@ export const paramDef = {
 		serverRules: { type: 'array', items: { type: 'string' } },
 		preservedUsernames: { type: 'array', items: { type: 'string' } },
 		manifestJsonOverride: { type: 'string' },
+		enableFanoutTimeline: { type: 'boolean' },
 		perLocalUserUserTimelineCacheMax: { type: 'integer' },
 		perRemoteUserUserTimelineCacheMax: { type: 'integer' },
 		perUserHomeTimelineCacheMax: { type: 'integer' },
@@ -480,6 +481,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				set.manifestJsonOverride = ps.manifestJsonOverride;
 			}
 
+			if (ps.enableFanoutTimeline !== undefined) {
+				set.enableFanoutTimeline = ps.enableFanoutTimeline;
+			}
+
 			if (ps.perLocalUserUserTimelineCacheMax !== undefined) {
 				set.perLocalUserUserTimelineCacheMax = ps.perLocalUserUserTimelineCacheMax;
 			}

packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts

@@ -17,6 +17,8 @@ import { CacheService } from '@/core/CacheService.js';
 import { FunoutTimelineService } from '@/core/FunoutTimelineService.js';
 import { QueryService } from '@/core/QueryService.js';
 import { UserFollowingService } from '@/core/UserFollowingService.js';
+import { MetaService } from '@/core/MetaService.js';
+import { MiLocalUser } from '@/models/User.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -75,6 +77,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private funoutTimelineService: FunoutTimelineService,
 		private queryService: QueryService,
 		private userFollowingService: UserFollowingService,
+		private metaService: MetaService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
@@ -85,163 +88,200 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.stlDisabled);
 			}
 
-			const [
-				userIdsWhoMeMuting,
-				userIdsWhoMeMutingRenotes,
-				userIdsWhoBlockingMe,
-			] = await Promise.all([
-				this.cacheService.userMutingsCache.fetch(me.id),
-				this.cacheService.renoteMutingsCache.fetch(me.id),
-				this.cacheService.userBlockedCache.fetch(me.id),
-			]);
+			const serverSettings = await this.metaService.fetch();
 
-			let noteIds: string[];
-			let shouldFallbackToDb = false;
+			if (serverSettings.enableFanoutTimeline) {
+				const [
+					userIdsWhoMeMuting,
+					userIdsWhoMeMutingRenotes,
+					userIdsWhoBlockingMe,
+				] = await Promise.all([
+					this.cacheService.userMutingsCache.fetch(me.id),
+					this.cacheService.renoteMutingsCache.fetch(me.id),
+					this.cacheService.userBlockedCache.fetch(me.id),
+				]);
 
-			if (ps.withFiles) {
-				const [htlNoteIds, ltlNoteIds] = await this.funoutTimelineService.getMulti([
-					`homeTimelineWithFiles:${me.id}`,
-					'localTimelineWithFiles',
-				], untilId, sinceId);
-				noteIds = Array.from(new Set([...htlNoteIds, ...ltlNoteIds]));
-			} else if (ps.withReplies) {
-				const [htlNoteIds, ltlNoteIds, ltlReplyNoteIds] = await this.funoutTimelineService.getMulti([
-					`homeTimeline:${me.id}`,
-					'localTimeline',
-					'localTimelineWithReplies',
-				], untilId, sinceId);
-				noteIds = Array.from(new Set([...htlNoteIds, ...ltlNoteIds, ...ltlReplyNoteIds]));
-			} else {
-				const [htlNoteIds, ltlNoteIds] = await this.funoutTimelineService.getMulti([
-					`homeTimeline:${me.id}`,
-					'localTimeline',
-				], untilId, sinceId);
-				noteIds = Array.from(new Set([...htlNoteIds, ...ltlNoteIds]));
-				shouldFallbackToDb = htlNoteIds.length === 0;
-			}
-
-			noteIds.sort((a, b) => a > b ? -1 : 1);
-			noteIds = noteIds.slice(0, ps.limit);
-
-			shouldFallbackToDb = shouldFallbackToDb || (noteIds.length === 0);
-
-			if (!shouldFallbackToDb) {
-				const query = this.notesRepository.createQueryBuilder('note')
-					.where('note.id IN (:...noteIds)', { noteIds: noteIds })
-					.innerJoinAndSelect('note.user', 'user')
-					.leftJoinAndSelect('note.reply', 'reply')
-					.leftJoinAndSelect('note.renote', 'renote')
-					.leftJoinAndSelect('reply.user', 'replyUser')
-					.leftJoinAndSelect('renote.user', 'renoteUser')
-					.leftJoinAndSelect('note.channel', 'channel');
-
-				let timeline = await query.getMany();
-
-				timeline = timeline.filter(note => {
-					if (note.userId === me.id) {
-						return true;
-					}
-					if (isUserRelated(note, userIdsWhoBlockingMe)) return false;
-					if (isUserRelated(note, userIdsWhoMeMuting)) return false;
-					if (note.renoteId) {
-						if (note.text == null && note.fileIds.length === 0 && !note.hasPoll) {
-							if (isUserRelated(note, userIdsWhoMeMutingRenotes)) return false;
-							if (ps.withRenotes === false) return false;
-						}
-					}
-
-					return true;
-				});
-
-				// TODO: フィルタした結果件数が足りなかった場合の対応
-
-				timeline.sort((a, b) => a.id > b.id ? -1 : 1);
-
-				process.nextTick(() => {
-					this.activeUsersChart.read(me);
-				});
-
-				return await this.noteEntityService.packMany(timeline, me);
-			} else { // fallback to db
-				const followees = await this.userFollowingService.getFollowees(me.id);
-
-				const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-					.andWhere(new Brackets(qb => {
-						if (followees.length > 0) {
-							const meOrFolloweeIds = [me.id, ...followees.map(f => f.followeeId)];
-							qb.where('note.userId IN (:...meOrFolloweeIds)', { meOrFolloweeIds: meOrFolloweeIds });
-							qb.orWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)');
-						} else {
-							qb.where('note.userId = :meId', { meId: me.id });
-							qb.orWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)');
-						}
-					}))
-					.innerJoinAndSelect('note.user', 'user')
-					.leftJoinAndSelect('note.reply', 'reply')
-					.leftJoinAndSelect('note.renote', 'renote')
-					.leftJoinAndSelect('reply.user', 'replyUser')
-					.leftJoinAndSelect('renote.user', 'renoteUser');
-
-				if (!ps.withReplies) {
-					query.andWhere(new Brackets(qb => {
-						qb
-							.where('note.replyId IS NULL') // 返信ではない
-							.orWhere(new Brackets(qb => {
-								qb // 返信だけど投稿者自身への返信
-									.where('note.replyId IS NOT NULL')
-									.andWhere('note.replyUserId = note.userId');
-							}));
-					}));
-				}
-
-				this.queryService.generateVisibilityQuery(query, me);
-				this.queryService.generateMutedUserQuery(query, me);
-				this.queryService.generateBlockedUserQuery(query, me);
-				this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
-
-				if (ps.includeMyRenotes === false) {
-					query.andWhere(new Brackets(qb => {
-						qb.orWhere('note.userId != :meId', { meId: me.id });
-						qb.orWhere('note.renoteId IS NULL');
-						qb.orWhere('note.text IS NOT NULL');
-						qb.orWhere('note.fileIds != \'{}\'');
-						qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-					}));
-				}
-
-				if (ps.includeRenotedMyNotes === false) {
-					query.andWhere(new Brackets(qb => {
-						qb.orWhere('note.renoteUserId != :meId', { meId: me.id });
-						qb.orWhere('note.renoteId IS NULL');
-						qb.orWhere('note.text IS NOT NULL');
-						qb.orWhere('note.fileIds != \'{}\'');
-						qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-					}));
-				}
-
-				if (ps.includeLocalRenotes === false) {
-					query.andWhere(new Brackets(qb => {
-						qb.orWhere('note.renoteUserHost IS NOT NULL');
-						qb.orWhere('note.renoteId IS NULL');
-						qb.orWhere('note.text IS NOT NULL');
-						qb.orWhere('note.fileIds != \'{}\'');
-						qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-					}));
-				}
+				let noteIds: string[];
+				let shouldFallbackToDb = false;
 
 				if (ps.withFiles) {
-					query.andWhere('note.fileIds != \'{}\'');
+					const [htlNoteIds, ltlNoteIds] = await this.funoutTimelineService.getMulti([
+						`homeTimelineWithFiles:${me.id}`,
+						'localTimelineWithFiles',
+					], untilId, sinceId);
+					noteIds = Array.from(new Set([...htlNoteIds, ...ltlNoteIds]));
+				} else if (ps.withReplies) {
+					const [htlNoteIds, ltlNoteIds, ltlReplyNoteIds] = await this.funoutTimelineService.getMulti([
+						`homeTimeline:${me.id}`,
+						'localTimeline',
+						'localTimelineWithReplies',
+					], untilId, sinceId);
+					noteIds = Array.from(new Set([...htlNoteIds, ...ltlNoteIds, ...ltlReplyNoteIds]));
+				} else {
+					const [htlNoteIds, ltlNoteIds] = await this.funoutTimelineService.getMulti([
+						`homeTimeline:${me.id}`,
+						'localTimeline',
+					], untilId, sinceId);
+					noteIds = Array.from(new Set([...htlNoteIds, ...ltlNoteIds]));
+					shouldFallbackToDb = htlNoteIds.length === 0;
 				}
-				//#endregion
 
-				const timeline = await query.limit(ps.limit).getMany();
+				noteIds.sort((a, b) => a > b ? -1 : 1);
+				noteIds = noteIds.slice(0, ps.limit);
 
-				process.nextTick(() => {
-					this.activeUsersChart.read(me);
-				});
+				shouldFallbackToDb = shouldFallbackToDb || (noteIds.length === 0);
 
-				return await this.noteEntityService.packMany(timeline, me);
+				if (!shouldFallbackToDb) {
+					const query = this.notesRepository.createQueryBuilder('note')
+						.where('note.id IN (:...noteIds)', { noteIds: noteIds })
+						.innerJoinAndSelect('note.user', 'user')
+						.leftJoinAndSelect('note.reply', 'reply')
+						.leftJoinAndSelect('note.renote', 'renote')
+						.leftJoinAndSelect('reply.user', 'replyUser')
+						.leftJoinAndSelect('renote.user', 'renoteUser')
+						.leftJoinAndSelect('note.channel', 'channel');
+
+					let timeline = await query.getMany();
+
+					timeline = timeline.filter(note => {
+						if (note.userId === me.id) {
+							return true;
+						}
+						if (isUserRelated(note, userIdsWhoBlockingMe)) return false;
+						if (isUserRelated(note, userIdsWhoMeMuting)) return false;
+						if (note.renoteId) {
+							if (note.text == null && note.fileIds.length === 0 && !note.hasPoll) {
+								if (isUserRelated(note, userIdsWhoMeMutingRenotes)) return false;
+								if (ps.withRenotes === false) return false;
+							}
+						}
+
+						return true;
+					});
+
+					// TODO: フィルタした結果件数が足りなかった場合の対応
+
+					timeline.sort((a, b) => a.id > b.id ? -1 : 1);
+
+					process.nextTick(() => {
+						this.activeUsersChart.read(me);
+					});
+
+					return await this.noteEntityService.packMany(timeline, me);
+				} else { // fallback to db
+					return await this.getFromDb({
+						untilId,
+						sinceId,
+						limit: ps.limit,
+						includeMyRenotes: ps.includeMyRenotes,
+						includeRenotedMyNotes: ps.includeRenotedMyNotes,
+						includeLocalRenotes: ps.includeLocalRenotes,
+						withFiles: ps.withFiles,
+						withReplies: ps.withReplies,
+					}, me);
+				}
+			} else {
+				return await this.getFromDb({
+					untilId,
+					sinceId,
+					limit: ps.limit,
+					includeMyRenotes: ps.includeMyRenotes,
+					includeRenotedMyNotes: ps.includeRenotedMyNotes,
+					includeLocalRenotes: ps.includeLocalRenotes,
+					withFiles: ps.withFiles,
+					withReplies: ps.withReplies,
+				}, me);
 			}
 		});
 	}
+
+	private async getFromDb(ps: {
+		untilId: string | null,
+		sinceId: string | null,
+		limit: number,
+		includeMyRenotes: boolean,
+		includeRenotedMyNotes: boolean,
+		includeLocalRenotes: boolean,
+		withFiles: boolean,
+		withReplies: boolean,
+	}, me: MiLocalUser) {
+		const followees = await this.userFollowingService.getFollowees(me.id);
+
+		const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
+			.andWhere(new Brackets(qb => {
+				if (followees.length > 0) {
+					const meOrFolloweeIds = [me.id, ...followees.map(f => f.followeeId)];
+					qb.where('note.userId IN (:...meOrFolloweeIds)', { meOrFolloweeIds: meOrFolloweeIds });
+					qb.orWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)');
+				} else {
+					qb.where('note.userId = :meId', { meId: me.id });
+					qb.orWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)');
+				}
+			}))
+			.innerJoinAndSelect('note.user', 'user')
+			.leftJoinAndSelect('note.reply', 'reply')
+			.leftJoinAndSelect('note.renote', 'renote')
+			.leftJoinAndSelect('reply.user', 'replyUser')
+			.leftJoinAndSelect('renote.user', 'renoteUser');
+
+		if (!ps.withReplies) {
+			query.andWhere(new Brackets(qb => {
+				qb
+					.where('note.replyId IS NULL') // 返信ではない
+					.orWhere(new Brackets(qb => {
+						qb // 返信だけど投稿者自身への返信
+							.where('note.replyId IS NOT NULL')
+							.andWhere('note.replyUserId = note.userId');
+					}));
+			}));
+		}
+
+		this.queryService.generateVisibilityQuery(query, me);
+		this.queryService.generateMutedUserQuery(query, me);
+		this.queryService.generateBlockedUserQuery(query, me);
+		this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
+
+		if (ps.includeMyRenotes === false) {
+			query.andWhere(new Brackets(qb => {
+				qb.orWhere('note.userId != :meId', { meId: me.id });
+				qb.orWhere('note.renoteId IS NULL');
+				qb.orWhere('note.text IS NOT NULL');
+				qb.orWhere('note.fileIds != \'{}\'');
+				qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+			}));
+		}
+
+		if (ps.includeRenotedMyNotes === false) {
+			query.andWhere(new Brackets(qb => {
+				qb.orWhere('note.renoteUserId != :meId', { meId: me.id });
+				qb.orWhere('note.renoteId IS NULL');
+				qb.orWhere('note.text IS NOT NULL');
+				qb.orWhere('note.fileIds != \'{}\'');
+				qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+			}));
+		}
+
+		if (ps.includeLocalRenotes === false) {
+			query.andWhere(new Brackets(qb => {
+				qb.orWhere('note.renoteUserHost IS NOT NULL');
+				qb.orWhere('note.renoteId IS NULL');
+				qb.orWhere('note.text IS NOT NULL');
+				qb.orWhere('note.fileIds != \'{}\'');
+				qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+			}));
+		}
+
+		if (ps.withFiles) {
+			query.andWhere('note.fileIds != \'{}\'');
+		}
+		//#endregion
+
+		const timeline = await query.limit(ps.limit).getMany();
+
+		process.nextTick(() => {
+			this.activeUsersChart.read(me);
+		});
+
+		return await this.noteEntityService.packMany(timeline, me);
+	}
 }

packages/backend/src/server/api/endpoints/notes/local-timeline.ts

@@ -16,6 +16,8 @@ import { CacheService } from '@/core/CacheService.js';
 import { isUserRelated } from '@/misc/is-user-related.js';
 import { FunoutTimelineService } from '@/core/FunoutTimelineService.js';
 import { QueryService } from '@/core/QueryService.js';
+import { MetaService } from '@/core/MetaService.js';
+import { MiLocalUser } from '@/models/User.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -69,6 +71,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private cacheService: CacheService,
 		private funoutTimelineService: FunoutTimelineService,
 		private queryService: QueryService,
+		private metaService: MetaService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
@@ -79,112 +82,140 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.ltlDisabled);
 			}
 
-			const [
-				userIdsWhoMeMuting,
-				userIdsWhoMeMutingRenotes,
-				userIdsWhoBlockingMe,
-			] = me ? await Promise.all([
-				this.cacheService.userMutingsCache.fetch(me.id),
-				this.cacheService.renoteMutingsCache.fetch(me.id),
-				this.cacheService.userBlockedCache.fetch(me.id),
-			]) : [new Set<string>(), new Set<string>(), new Set<string>()];
+			const serverSettings = await this.metaService.fetch();
 
-			let noteIds: string[];
+			if (serverSettings.enableFanoutTimeline) {
+				const [
+					userIdsWhoMeMuting,
+					userIdsWhoMeMutingRenotes,
+					userIdsWhoBlockingMe,
+				] = me ? await Promise.all([
+					this.cacheService.userMutingsCache.fetch(me.id),
+					this.cacheService.renoteMutingsCache.fetch(me.id),
+					this.cacheService.userBlockedCache.fetch(me.id),
+				]) : [new Set<string>(), new Set<string>(), new Set<string>()];
 
-			if (ps.withFiles) {
-				noteIds = await this.funoutTimelineService.get('localTimelineWithFiles', untilId, sinceId);
-			} else {
-				const [nonReplyNoteIds, replyNoteIds] = await this.funoutTimelineService.getMulti([
-					'localTimeline',
-					'localTimelineWithReplies',
-				], untilId, sinceId);
-				noteIds = Array.from(new Set([...nonReplyNoteIds, ...replyNoteIds]));
-				noteIds.sort((a, b) => a > b ? -1 : 1);
-			}
-
-			noteIds = noteIds.slice(0, ps.limit);
-
-			if (noteIds.length > 0) {
-				const query = this.notesRepository.createQueryBuilder('note')
-					.where('note.id IN (:...noteIds)', { noteIds: noteIds })
-					.innerJoinAndSelect('note.user', 'user')
-					.leftJoinAndSelect('note.reply', 'reply')
-					.leftJoinAndSelect('note.renote', 'renote')
-					.leftJoinAndSelect('reply.user', 'replyUser')
-					.leftJoinAndSelect('renote.user', 'renoteUser')
-					.leftJoinAndSelect('note.channel', 'channel');
-
-				let timeline = await query.getMany();
-
-				timeline = timeline.filter(note => {
-					if (me && (note.userId === me.id)) {
-						return true;
-					}
-					if (!ps.withReplies && note.replyId && note.replyUserId !== note.userId && (me == null || note.replyUserId !== me.id)) return false;
-					if (me && isUserRelated(note, userIdsWhoBlockingMe)) return false;
-					if (me && isUserRelated(note, userIdsWhoMeMuting)) return false;
-					if (note.renoteId) {
-						if (note.text == null && note.fileIds.length === 0 && !note.hasPoll) {
-							if (me && isUserRelated(note, userIdsWhoMeMutingRenotes)) return false;
-							if (ps.withRenotes === false) return false;
-						}
-					}
-
-					return true;
-				});
-
-				// TODO: フィルタした結果件数が足りなかった場合の対応
-
-				timeline.sort((a, b) => a.id > b.id ? -1 : 1);
-
-				process.nextTick(() => {
-					if (me) {
-						this.activeUsersChart.read(me);
-					}
-				});
-
-				return await this.noteEntityService.packMany(timeline, me);
-			} else { // fallback to db
-				const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
-					ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-					.andWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)')
-					.innerJoinAndSelect('note.user', 'user')
-					.leftJoinAndSelect('note.reply', 'reply')
-					.leftJoinAndSelect('note.renote', 'renote')
-					.leftJoinAndSelect('reply.user', 'replyUser')
-					.leftJoinAndSelect('renote.user', 'renoteUser');
-
-				this.queryService.generateVisibilityQuery(query, me);
-				if (me) this.queryService.generateMutedUserQuery(query, me);
-				if (me) this.queryService.generateBlockedUserQuery(query, me);
-				if (me) this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
+				let noteIds: string[];
 
 				if (ps.withFiles) {
-					query.andWhere('note.fileIds != \'{}\'');
+					noteIds = await this.funoutTimelineService.get('localTimelineWithFiles', untilId, sinceId);
+				} else {
+					const [nonReplyNoteIds, replyNoteIds] = await this.funoutTimelineService.getMulti([
+						'localTimeline',
+						'localTimelineWithReplies',
+					], untilId, sinceId);
+					noteIds = Array.from(new Set([...nonReplyNoteIds, ...replyNoteIds]));
+					noteIds.sort((a, b) => a > b ? -1 : 1);
 				}
 
-				if (!ps.withReplies) {
-					query.andWhere(new Brackets(qb => {
-						qb
-							.where('note.replyId IS NULL') // 返信ではない
-							.orWhere(new Brackets(qb => {
-								qb // 返信だけど投稿者自身への返信
-									.where('note.replyId IS NOT NULL')
-									.andWhere('note.replyUserId = note.userId');
-							}));
-					}));
+				noteIds = noteIds.slice(0, ps.limit);
+
+				if (noteIds.length > 0) {
+					const query = this.notesRepository.createQueryBuilder('note')
+						.where('note.id IN (:...noteIds)', { noteIds: noteIds })
+						.innerJoinAndSelect('note.user', 'user')
+						.leftJoinAndSelect('note.reply', 'reply')
+						.leftJoinAndSelect('note.renote', 'renote')
+						.leftJoinAndSelect('reply.user', 'replyUser')
+						.leftJoinAndSelect('renote.user', 'renoteUser')
+						.leftJoinAndSelect('note.channel', 'channel');
+
+					let timeline = await query.getMany();
+
+					timeline = timeline.filter(note => {
+						if (me && (note.userId === me.id)) {
+							return true;
+						}
+						if (!ps.withReplies && note.replyId && note.replyUserId !== note.userId && (me == null || note.replyUserId !== me.id)) return false;
+						if (me && isUserRelated(note, userIdsWhoBlockingMe)) return false;
+						if (me && isUserRelated(note, userIdsWhoMeMuting)) return false;
+						if (note.renoteId) {
+							if (note.text == null && note.fileIds.length === 0 && !note.hasPoll) {
+								if (me && isUserRelated(note, userIdsWhoMeMutingRenotes)) return false;
+								if (ps.withRenotes === false) return false;
+							}
+						}
+
+						return true;
+					});
+
+					// TODO: フィルタした結果件数が足りなかった場合の対応
+
+					timeline.sort((a, b) => a.id > b.id ? -1 : 1);
+
+					process.nextTick(() => {
+						if (me) {
+							this.activeUsersChart.read(me);
+						}
+					});
+
+					return await this.noteEntityService.packMany(timeline, me);
+				} else { // fallback to db
+					return await this.getFromDb({
+						untilId,
+						sinceId,
+						limit: ps.limit,
+						withFiles: ps.withFiles,
+						withReplies: ps.withReplies,
+					}, me);
 				}
-
-				const timeline = await query.limit(ps.limit).getMany();
-
-				process.nextTick(() => {
-					if (me) {
-						this.activeUsersChart.read(me);
-					}
-				});
-
-				return await this.noteEntityService.packMany(timeline, me);
+			} else {
+				return await this.getFromDb({
+					untilId,
+					sinceId,
+					limit: ps.limit,
+					withFiles: ps.withFiles,
+					withReplies: ps.withReplies,
+				}, me);
 			}
 		});
 	}
+
+	private async getFromDb(ps: {
+		sinceId: string | null,
+		untilId: string | null,
+		limit: number,
+		withFiles: boolean,
+		withReplies: boolean,
+	}, me: MiLocalUser | null) {
+		const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
+			ps.sinceId, ps.untilId)
+			.andWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)')
+			.innerJoinAndSelect('note.user', 'user')
+			.leftJoinAndSelect('note.reply', 'reply')
+			.leftJoinAndSelect('note.renote', 'renote')
+			.leftJoinAndSelect('reply.user', 'replyUser')
+			.leftJoinAndSelect('renote.user', 'renoteUser');
+
+		this.queryService.generateVisibilityQuery(query, me);
+		if (me) this.queryService.generateMutedUserQuery(query, me);
+		if (me) this.queryService.generateBlockedUserQuery(query, me);
+		if (me) this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
+
+		if (ps.withFiles) {
+			query.andWhere('note.fileIds != \'{}\'');
+		}
+
+		if (!ps.withReplies) {
+			query.andWhere(new Brackets(qb => {
+				qb
+					.where('note.replyId IS NULL') // 返信ではない
+					.orWhere(new Brackets(qb => {
+						qb // 返信だけど投稿者自身への返信
+							.where('note.replyId IS NOT NULL')
+							.andWhere('note.replyUserId = note.userId');
+					}));
+			}));
+		}
+
+		const timeline = await query.limit(ps.limit).getMany();
+
+		process.nextTick(() => {
+			if (me) {
+				this.activeUsersChart.read(me);
+			}
+		});
+
+		return await this.noteEntityService.packMany(timeline, me);
+	}
 }

packages/backend/src/server/api/endpoints/notes/timeline.ts

@@ -16,6 +16,8 @@ import { CacheService } from '@/core/CacheService.js';
 import { isUserRelated } from '@/misc/is-user-related.js';
 import { FunoutTimelineService } from '@/core/FunoutTimelineService.js';
 import { UserFollowingService } from '@/core/UserFollowingService.js';
+import { MiLocalUser } from '@/models/User.js';
+import { MetaService } from '@/core/MetaService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -63,144 +65,171 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private funoutTimelineService: FunoutTimelineService,
 		private userFollowingService: UserFollowingService,
 		private queryService: QueryService,
+		private metaService: MetaService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
 			const sinceId = ps.sinceId ?? (ps.sinceDate ? this.idService.gen(ps.sinceDate!) : null);
 
-			const [
-				followings,
-				userIdsWhoMeMuting,
-				userIdsWhoMeMutingRenotes,
-				userIdsWhoBlockingMe,
-			] = await Promise.all([
-				this.cacheService.userFollowingsCache.fetch(me.id),
-				this.cacheService.userMutingsCache.fetch(me.id),
-				this.cacheService.renoteMutingsCache.fetch(me.id),
-				this.cacheService.userBlockedCache.fetch(me.id),
-			]);
+			const serverSettings = await this.metaService.fetch();
 
-			let noteIds = await this.funoutTimelineService.get(ps.withFiles ? `homeTimelineWithFiles:${me.id}` : `homeTimeline:${me.id}`, untilId, sinceId);
-			noteIds = noteIds.slice(0, ps.limit);
+			if (serverSettings.enableFanoutTimeline) {
+				const [
+					followings,
+					userIdsWhoMeMuting,
+					userIdsWhoMeMutingRenotes,
+					userIdsWhoBlockingMe,
+				] = await Promise.all([
+					this.cacheService.userFollowingsCache.fetch(me.id),
+					this.cacheService.userMutingsCache.fetch(me.id),
+					this.cacheService.renoteMutingsCache.fetch(me.id),
+					this.cacheService.userBlockedCache.fetch(me.id),
+				]);
 
-			if (noteIds.length > 0) {
-				const query = this.notesRepository.createQueryBuilder('note')
-					.where('note.id IN (:...noteIds)', { noteIds: noteIds })
-					.innerJoinAndSelect('note.user', 'user')
-					.leftJoinAndSelect('note.reply', 'reply')
-					.leftJoinAndSelect('note.renote', 'renote')
-					.leftJoinAndSelect('reply.user', 'replyUser')
-					.leftJoinAndSelect('renote.user', 'renoteUser')
-					.leftJoinAndSelect('note.channel', 'channel');
+				let noteIds = await this.funoutTimelineService.get(ps.withFiles ? `homeTimelineWithFiles:${me.id}` : `homeTimeline:${me.id}`, untilId, sinceId);
+				noteIds = noteIds.slice(0, ps.limit);
 
-				let timeline = await query.getMany();
+				if (noteIds.length > 0) {
+					const query = this.notesRepository.createQueryBuilder('note')
+						.where('note.id IN (:...noteIds)', { noteIds: noteIds })
+						.innerJoinAndSelect('note.user', 'user')
+						.leftJoinAndSelect('note.reply', 'reply')
+						.leftJoinAndSelect('note.renote', 'renote')
+						.leftJoinAndSelect('reply.user', 'replyUser')
+						.leftJoinAndSelect('renote.user', 'renoteUser')
+						.leftJoinAndSelect('note.channel', 'channel');
 
-				timeline = timeline.filter(note => {
-					if (note.userId === me.id) {
-						return true;
-					}
-					if (isUserRelated(note, userIdsWhoBlockingMe)) return false;
-					if (isUserRelated(note, userIdsWhoMeMuting)) return false;
-					if (note.renoteId) {
-						if (note.text == null && note.fileIds.length === 0 && !note.hasPoll) {
-							if (isUserRelated(note, userIdsWhoMeMutingRenotes)) return false;
-							if (ps.withRenotes === false) return false;
+					let timeline = await query.getMany();
+
+					timeline = timeline.filter(note => {
+						if (note.userId === me.id) {
+							return true;
+						}
+						if (isUserRelated(note, userIdsWhoBlockingMe)) return false;
+						if (isUserRelated(note, userIdsWhoMeMuting)) return false;
+						if (note.renoteId) {
+							if (note.text == null && note.fileIds.length === 0 && !note.hasPoll) {
+								if (isUserRelated(note, userIdsWhoMeMutingRenotes)) return false;
+								if (ps.withRenotes === false) return false;
+							}
+						}
+						if (note.reply && note.reply.visibility === 'followers') {
+							if (!Object.hasOwn(followings, note.reply.userId)) return false;
 						}
-					}
-					if (note.reply && note.reply.visibility === 'followers') {
-						if (!Object.hasOwn(followings, note.reply.userId)) return false;
-					}
 
-					return true;
-				});
+						return true;
+					});
 
-				// TODO: フィルタした結果件数が足りなかった場合の対応
+					// TODO: フィルタした結果件数が足りなかった場合の対応
 
-				timeline.sort((a, b) => a.id > b.id ? -1 : 1);
+					timeline.sort((a, b) => a.id > b.id ? -1 : 1);
 
-				process.nextTick(() => {
-					this.activeUsersChart.read(me);
-				});
+					process.nextTick(() => {
+						this.activeUsersChart.read(me);
+					});
 
-				return await this.noteEntityService.packMany(timeline, me);
-			} else { // fallback to db
-				const followees = await this.userFollowingService.getFollowees(me.id);
-
-				//#region Construct query
-				const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-					.andWhere('note.channelId IS NULL')
-					.innerJoinAndSelect('note.user', 'user')
-					.leftJoinAndSelect('note.reply', 'reply')
-					.leftJoinAndSelect('note.renote', 'renote')
-					.leftJoinAndSelect('reply.user', 'replyUser')
-					.leftJoinAndSelect('renote.user', 'renoteUser');
-
-				if (followees.length > 0) {
-					const meOrFolloweeIds = [me.id, ...followees.map(f => f.followeeId)];
-
-					query.andWhere('note.userId IN (:...meOrFolloweeIds)', { meOrFolloweeIds: meOrFolloweeIds });
-				} else {
-					query.andWhere('note.userId = :meId', { meId: me.id });
+					return await this.noteEntityService.packMany(timeline, me);
+				} else { // fallback to db
+					return await this.getFromDb({
+						untilId,
+						sinceId,
+						limit: ps.limit,
+						includeMyRenotes: ps.includeMyRenotes,
+						includeRenotedMyNotes: ps.includeRenotedMyNotes,
+						includeLocalRenotes: ps.includeLocalRenotes,
+						withFiles: ps.withFiles,
+					}, me);
 				}
-
-				query.andWhere(new Brackets(qb => {
-					qb
-						.where('note.replyId IS NULL') // 返信ではない
-						.orWhere(new Brackets(qb => {
-							qb // 返信だけど投稿者自身への返信
-								.where('note.replyId IS NOT NULL')
-								.andWhere('note.replyUserId = note.userId');
-						}));
-				}));
-
-				this.queryService.generateVisibilityQuery(query, me);
-				this.queryService.generateMutedUserQuery(query, me);
-				this.queryService.generateBlockedUserQuery(query, me);
-				this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
-
-				if (ps.includeMyRenotes === false) {
-					query.andWhere(new Brackets(qb => {
-						qb.orWhere('note.userId != :meId', { meId: me.id });
-						qb.orWhere('note.renoteId IS NULL');
-						qb.orWhere('note.text IS NOT NULL');
-						qb.orWhere('note.fileIds != \'{}\'');
-						qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-					}));
-				}
-
-				if (ps.includeRenotedMyNotes === false) {
-					query.andWhere(new Brackets(qb => {
-						qb.orWhere('note.renoteUserId != :meId', { meId: me.id });
-						qb.orWhere('note.renoteId IS NULL');
-						qb.orWhere('note.text IS NOT NULL');
-						qb.orWhere('note.fileIds != \'{}\'');
-						qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-					}));
-				}
-
-				if (ps.includeLocalRenotes === false) {
-					query.andWhere(new Brackets(qb => {
-						qb.orWhere('note.renoteUserHost IS NOT NULL');
-						qb.orWhere('note.renoteId IS NULL');
-						qb.orWhere('note.text IS NOT NULL');
-						qb.orWhere('note.fileIds != \'{}\'');
-						qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-					}));
-				}
-
-				if (ps.withFiles) {
-					query.andWhere('note.fileIds != \'{}\'');
-				}
-				//#endregion
-
-				const timeline = await query.limit(ps.limit).getMany();
-
-				process.nextTick(() => {
-					this.activeUsersChart.read(me);
-				});
-
-				return await this.noteEntityService.packMany(timeline, me);
+			} else {
+				return await this.getFromDb({
+					untilId,
+					sinceId,
+					limit: ps.limit,
+					includeMyRenotes: ps.includeMyRenotes,
+					includeRenotedMyNotes: ps.includeRenotedMyNotes,
+					includeLocalRenotes: ps.includeLocalRenotes,
+					withFiles: ps.withFiles,
+				}, me);
 			}
 		});
 	}
+
+	private async getFromDb(ps: { untilId: string | null; sinceId: string | null; limit: number; includeMyRenotes: boolean; includeRenotedMyNotes: boolean; includeLocalRenotes: boolean; withFiles: boolean; }, me: MiLocalUser) {
+		const followees = await this.userFollowingService.getFollowees(me.id);
+
+		//#region Construct query
+		const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
+			.andWhere('note.channelId IS NULL')
+			.innerJoinAndSelect('note.user', 'user')
+			.leftJoinAndSelect('note.reply', 'reply')
+			.leftJoinAndSelect('note.renote', 'renote')
+			.leftJoinAndSelect('reply.user', 'replyUser')
+			.leftJoinAndSelect('renote.user', 'renoteUser');
+
+		if (followees.length > 0) {
+			const meOrFolloweeIds = [me.id, ...followees.map(f => f.followeeId)];
+
+			query.andWhere('note.userId IN (:...meOrFolloweeIds)', { meOrFolloweeIds: meOrFolloweeIds });
+		} else {
+			query.andWhere('note.userId = :meId', { meId: me.id });
+		}
+
+		query.andWhere(new Brackets(qb => {
+			qb
+				.where('note.replyId IS NULL') // 返信ではない
+				.orWhere(new Brackets(qb => {
+					qb // 返信だけど投稿者自身への返信
+						.where('note.replyId IS NOT NULL')
+						.andWhere('note.replyUserId = note.userId');
+				}));
+		}));
+
+		this.queryService.generateVisibilityQuery(query, me);
+		this.queryService.generateMutedUserQuery(query, me);
+		this.queryService.generateBlockedUserQuery(query, me);
+		this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
+
+		if (ps.includeMyRenotes === false) {
+			query.andWhere(new Brackets(qb => {
+				qb.orWhere('note.userId != :meId', { meId: me.id });
+				qb.orWhere('note.renoteId IS NULL');
+				qb.orWhere('note.text IS NOT NULL');
+				qb.orWhere('note.fileIds != \'{}\'');
+				qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+			}));
+		}
+
+		if (ps.includeRenotedMyNotes === false) {
+			query.andWhere(new Brackets(qb => {
+				qb.orWhere('note.renoteUserId != :meId', { meId: me.id });
+				qb.orWhere('note.renoteId IS NULL');
+				qb.orWhere('note.text IS NOT NULL');
+				qb.orWhere('note.fileIds != \'{}\'');
+				qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+			}));
+		}
+
+		if (ps.includeLocalRenotes === false) {
+			query.andWhere(new Brackets(qb => {
+				qb.orWhere('note.renoteUserHost IS NOT NULL');
+				qb.orWhere('note.renoteId IS NULL');
+				qb.orWhere('note.text IS NOT NULL');
+				qb.orWhere('note.fileIds != \'{}\'');
+				qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+			}));
+		}
+
+		if (ps.withFiles) {
+			query.andWhere('note.fileIds != \'{}\'');
+		}
+		//#endregion
+
+		const timeline = await query.limit(ps.limit).getMany();
+
+		process.nextTick(() => {
+			this.activeUsersChart.read(me);
+		});
+
+		return await this.noteEntityService.packMany(timeline, me);
+	}
 }

packages/backend/test/unit/activitypub.ts

@@ -93,6 +93,7 @@ describe('ActivityPub', () => {
 	const metaInitial = {
 		cacheRemoteFiles: true,
 		cacheRemoteSensitiveFiles: true,
+		enableFanoutTimeline: true,
 		perUserHomeTimelineCacheMax: 100,
 		perLocalUserUserTimelineCacheMax: 100,
 		perRemoteUserUserTimelineCacheMax: 100,

packages/frontend/src/pages/admin/settings.vue

@@ -87,9 +87,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 					</FormSection>
 
 					<FormSection>
-						<template #label>Timeline caching</template>
+						<template #label>Misskey® Fan-out Timeline Technology™ (FTT)</template>
 
 						<div class="_gaps_m">
+							<MkSwitch v-model="enableFanoutTimeline">
+								<template #label>{{ i18n.ts.enable }}</template>
+								<template #caption>{{ i18n.ts._serverSettings.fanoutTimelineDescription }}</template>
+							</MkSwitch>
+
 							<MkInput v-model="perLocalUserUserTimelineCacheMax" type="number">
 								<template #label>perLocalUserUserTimelineCacheMax</template>
 							</MkInput>
@@ -165,6 +170,7 @@ let cacheRemoteSensitiveFiles: boolean = $ref(false);
 let enableServiceWorker: boolean = $ref(false);
 let swPublicKey: any = $ref(null);
 let swPrivateKey: any = $ref(null);
+let enableFanoutTimeline: boolean = $ref(false);
 let perLocalUserUserTimelineCacheMax: number = $ref(0);
 let perRemoteUserUserTimelineCacheMax: number = $ref(0);
 let perUserHomeTimelineCacheMax: number = $ref(0);
@@ -185,6 +191,7 @@ async function init(): Promise<void> {
 	enableServiceWorker = meta.enableServiceWorker;
 	swPublicKey = meta.swPublickey;
 	swPrivateKey = meta.swPrivateKey;
+	enableFanoutTimeline = meta.enableFanoutTimeline;
 	perLocalUserUserTimelineCacheMax = meta.perLocalUserUserTimelineCacheMax;
 	perRemoteUserUserTimelineCacheMax = meta.perRemoteUserUserTimelineCacheMax;
 	perUserHomeTimelineCacheMax = meta.perUserHomeTimelineCacheMax;
@@ -206,6 +213,7 @@ async function save(): void {
 		enableServiceWorker,
 		swPublicKey,
 		swPrivateKey,
+		enableFanoutTimeline,
 		perLocalUserUserTimelineCacheMax,
 		perRemoteUserUserTimelineCacheMax,
 		perUserHomeTimelineCacheMax,