Fix: チャンネルのフォロー・アンフォローの反映速度を改善 (#12149)

* チャンネルのフォロー・アンフォローの反映速度を改善

* fix lint

* userFollowingChannelsCacheの場所をCacheServiceからChannelFollowingServiceに移動

---------

Co-authored-by: osamu <46447427+sam-osamu@users.noreply.github.com>

4 files changed, 14 insertions, 21 deletions

diff --git a/packages/backend/src/server/api/StreamingApiServerService.ts b/packages/backend/src/server/api/StreamingApiServerService.ts
index badcec1b33..dc3a00617c 100644
--- a/packages/backend/src/server/api/StreamingApiServerService.ts
+++ b/packages/backend/src/server/api/StreamingApiServerService.ts
@@ -15,6 +15,7 @@ import { bindThis } from '@/decorators.js';
 import { CacheService } from '@/core/CacheService.js';
 import { MiLocalUser } from '@/models/User.js';
 import { UserService } from '@/core/UserService.js';
+import { ChannelFollowingService } from '@/core/ChannelFollowingService.js';
 import { AuthenticateService, AuthenticationError } from './AuthenticateService.js';
 import MainStreamConnection from './stream/Connection.js';
 import { ChannelsService } from './stream/ChannelsService.js';
@@ -39,6 +40,7 @@ export class StreamingApiServerService {
 		private channelsService: ChannelsService,
 		private notificationService: NotificationService,
 		private usersService: UserService,
+		private channelFollowingService: ChannelFollowingService,
 	) {
 	}
 
@@ -93,6 +95,7 @@ export class StreamingApiServerService {
 				this.noteReadService,
 				this.notificationService,
 				this.cacheService,
+				this.channelFollowingService,
 				user, app,
 			);
 
diff --git a/packages/backend/src/server/api/endpoints/channels/follow.ts b/packages/backend/src/server/api/endpoints/channels/follow.ts
index 76ec6be805..bb5a477eb8 100644
--- a/packages/backend/src/server/api/endpoints/channels/follow.ts
+++ b/packages/backend/src/server/api/endpoints/channels/follow.ts
@@ -5,9 +5,9 @@
 
 import { Inject, Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import type { ChannelFollowingsRepository, ChannelsRepository } from '@/models/_.js';
-import { IdService } from '@/core/IdService.js';
+import type { ChannelsRepository } from '@/models/_.js';
 import { DI } from '@/di-symbols.js';
+import { ChannelFollowingService } from '@/core/ChannelFollowingService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -41,11 +41,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 	constructor(
 		@Inject(DI.channelsRepository)
 		private channelsRepository: ChannelsRepository,
-
-		@Inject(DI.channelFollowingsRepository)
-		private channelFollowingsRepository: ChannelFollowingsRepository,
-
-		private idService: IdService,
+		private channelFollowingService: ChannelFollowingService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const channel = await this.channelsRepository.findOneBy({
@@ -56,11 +52,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.noSuchChannel);
 			}
 
-			await this.channelFollowingsRepository.insert({
-				id: this.idService.gen(),
-				followerId: me.id,
-				followeeId: channel.id,
-			});
+			await this.channelFollowingService.follow(me, channel);
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/channels/unfollow.ts b/packages/backend/src/server/api/endpoints/channels/unfollow.ts
index 46883dd548..c95332c7f8 100644
--- a/packages/backend/src/server/api/endpoints/channels/unfollow.ts
+++ b/packages/backend/src/server/api/endpoints/channels/unfollow.ts
@@ -5,8 +5,9 @@
 
 import { Inject, Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import type { ChannelFollowingsRepository, ChannelsRepository } from '@/models/_.js';
+import type { ChannelsRepository } from '@/models/_.js';
 import { DI } from '@/di-symbols.js';
+import { ChannelFollowingService } from '@/core/ChannelFollowingService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -40,9 +41,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 	constructor(
 		@Inject(DI.channelsRepository)
 		private channelsRepository: ChannelsRepository,
-
-		@Inject(DI.channelFollowingsRepository)
-		private channelFollowingsRepository: ChannelFollowingsRepository,
+		private channelFollowingService: ChannelFollowingService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const channel = await this.channelsRepository.findOneBy({
@@ -53,10 +52,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.noSuchChannel);
 			}
 
-			await this.channelFollowingsRepository.delete({
-				followerId: me.id,
-				followeeId: channel.id,
-			});
+			await this.channelFollowingService.unfollow(me, channel);
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/stream/Connection.ts b/packages/backend/src/server/api/stream/Connection.ts
index f981e63871..2d8fec30b1 100644
--- a/packages/backend/src/server/api/stream/Connection.ts
+++ b/packages/backend/src/server/api/stream/Connection.ts
@@ -13,6 +13,7 @@ import { bindThis } from '@/decorators.js';
 import { CacheService } from '@/core/CacheService.js';
 import { MiFollowing, MiUserProfile } from '@/models/_.js';
 import type { StreamEventEmitter, GlobalEvents } from '@/core/GlobalEventService.js';
+import { ChannelFollowingService } from '@/core/ChannelFollowingService.js';
 import type { ChannelsService } from './ChannelsService.js';
 import type { EventEmitter } from 'events';
 import type Channel from './channel.js';
@@ -42,6 +43,7 @@ export default class Connection {
 		private noteReadService: NoteReadService,
 		private notificationService: NotificationService,
 		private cacheService: CacheService,
+		private channelFollowingService: ChannelFollowingService,
 
 		user: MiUser | null | undefined,
 		token: MiAccessToken | null | undefined,
@@ -56,7 +58,7 @@ export default class Connection {
 		const [userProfile, following, followingChannels, userIdsWhoMeMuting, userIdsWhoBlockingMe, userIdsWhoMeMutingRenotes] = await Promise.all([
 			this.cacheService.userProfileCache.fetch(this.user.id),
 			this.cacheService.userFollowingsCache.fetch(this.user.id),
-			this.cacheService.userFollowingChannelsCache.fetch(this.user.id),
+			this.channelFollowingService.userFollowingChannelsCache.fetch(this.user.id),
 			this.cacheService.userMutingsCache.fetch(this.user.id),
 			this.cacheService.userBlockedCache.fetch(this.user.id),
 			this.cacheService.renoteMutingsCache.fetch(this.user.id),