refactor: use TRANSIENT scope to avoid service bucket relay (#16985)

* refactor: use TRANSIENT scope to avoid service bucket relay

* lint: fix lints

* refactor: use transient for apResolver

* Update packages/backend/src/core/activitypub/models/ApImageService.ts

* fix

32 files changed, 397 insertions, 712 deletions

diff --git a/packages/backend/src/core/CoreModule.ts b/packages/backend/src/core/CoreModule.ts
index 87575ca59a..f075671d93 100644
--- a/packages/backend/src/core/CoreModule.ts
+++ b/packages/backend/src/core/CoreModule.ts
@@ -141,7 +141,7 @@ import { ApLoggerService } from './activitypub/ApLoggerService.js';
 import { ApMfmService } from './activitypub/ApMfmService.js';
 import { ApRendererService } from './activitypub/ApRendererService.js';
 import { ApRequestService } from './activitypub/ApRequestService.js';
-import { ApResolverService } from './activitypub/ApResolverService.js';
+import { ApResolverService, Resolver } from './activitypub/ApResolverService.js';
 import { JsonLdService } from './activitypub/JsonLdService.js';
 import { RemoteLoggerService } from './RemoteLoggerService.js';
 import { RemoteUserResolveService } from './RemoteUserResolveService.js';
@@ -447,6 +447,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		ApRendererService,
 		ApRequestService,
 		ApResolverService,
+		Resolver,
 		JsonLdService,
 		RemoteLoggerService,
 		RemoteUserResolveService,
@@ -745,6 +746,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		ApRendererService,
 		ApRequestService,
 		ApResolverService,
+		Resolver,
 		JsonLdService,
 		RemoteLoggerService,
 		RemoteUserResolveService,
diff --git a/packages/backend/src/core/activitypub/ApInboxService.ts b/packages/backend/src/core/activitypub/ApInboxService.ts
index 81637580e3..ff47ca930d 100644
--- a/packages/backend/src/core/activitypub/ApInboxService.ts
+++ b/packages/backend/src/core/activitypub/ApInboxService.ts
@@ -95,7 +95,7 @@ export class ApInboxService {
 		if (isCollectionOrOrderedCollection(activity)) {
 			const results = [] as [string, string | void][];
 			// eslint-disable-next-line no-param-reassign
-			resolver ??= this.apResolverService.createResolver();
+			resolver ??= await this.apResolverService.createResolver();
 
 			const items = toArray(isCollection(activity) ? activity.items : activity.orderedItems);
 			if (items.length >= resolver.getRecursionLimit()) {
@@ -221,7 +221,7 @@ export class ApInboxService {
 		this.logger.info(`Accept: ${uri}`);
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(err => {
 			this.logger.error(`Resolution failed: ${err}`);
@@ -284,7 +284,7 @@ export class ApInboxService {
 		this.logger.info(`Announce: ${uri}`);
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		if (!activity.object) return 'skip: activity has no object property';
 		const targetUri = getApId(activity.object);
@@ -406,7 +406,7 @@ export class ApInboxService {
 		}
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -575,7 +575,7 @@ export class ApInboxService {
 		this.logger.info(`Reject: ${uri}`);
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -642,7 +642,7 @@ export class ApInboxService {
 		this.logger.info(`Undo: ${uri}`);
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
@@ -774,7 +774,7 @@ export class ApInboxService {
 		this.logger.debug('Update');
 
 		// eslint-disable-next-line no-param-reassign
-		resolver ??= this.apResolverService.createResolver();
+		resolver ??= await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(activity.object).catch(e => {
 			this.logger.error(`Resolution failed: ${e}`);
diff --git a/packages/backend/src/core/activitypub/ApResolverService.ts b/packages/backend/src/core/activitypub/ApResolverService.ts
index 646150455b..0f51b1ce8d 100644
--- a/packages/backend/src/core/activitypub/ApResolverService.ts
+++ b/packages/backend/src/core/activitypub/ApResolverService.ts
@@ -3,10 +3,17 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Inject, Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { IsNull, Not } from 'typeorm';
 import type { MiLocalUser, MiRemoteUser } from '@/models/User.js';
-import type { NotesRepository, PollsRepository, NoteReactionsRepository, UsersRepository, FollowRequestsRepository, MiMeta } from '@/models/_.js';
+import type {
+	FollowRequestsRepository,
+	MiMeta,
+	NoteReactionsRepository,
+	NotesRepository,
+	PollsRepository,
+	UsersRepository
+} from '@/models/_.js';
 import type { Config } from '@/config.js';
 import { HttpRequestService } from '@/core/HttpRequestService.js';
 import { DI } from '@/di-symbols.js';
@@ -16,26 +23,43 @@ import { LoggerService } from '@/core/LoggerService.js';
 import type Logger from '@/logger.js';
 import { SystemAccountService } from '@/core/SystemAccountService.js';
 import { IdentifiableError } from '@/misc/identifiable-error.js';
+import type { ICollection, IObject, IOrderedCollection } from './type.js';
 import { isCollectionOrOrderedCollection } from './type.js';
 import { ApDbResolverService } from './ApDbResolverService.js';
 import { ApRendererService } from './ApRendererService.js';
 import { ApRequestService } from './ApRequestService.js';
 import { FetchAllowSoftFailMask } from './misc/check-against-url.js';
-import type { IObject, ICollection, IOrderedCollection } from './type.js';
+import { ModuleRef } from '@nestjs/core';
 
+@Injectable({ scope: Scope.TRANSIENT })
 export class Resolver {
 	private history: Set<string>;
 	private user?: MiLocalUser;
 	private logger: Logger;
+	private recursionLimit = 256;
 
 	constructor(
+		@Inject(DI.config)
 		private config: Config,
+
+		@Inject(DI.meta)
 		private meta: MiMeta,
+
+		@Inject(DI.usersRepository)
 		private usersRepository: UsersRepository,
+
+		@Inject(DI.notesRepository)
 		private notesRepository: NotesRepository,
+
+		@Inject(DI.pollsRepository)
 		private pollsRepository: PollsRepository,
+
+		@Inject(DI.noteReactionsRepository)
 		private noteReactionsRepository: NoteReactionsRepository,
+
+		@Inject(DI.followRequestsRepository)
 		private followRequestsRepository: FollowRequestsRepository,
+
 		private utilityService: UtilityService,
 		private systemAccountService: SystemAccountService,
 		private apRequestService: ApRequestService,
@@ -43,7 +67,6 @@ export class Resolver {
 		private apRendererService: ApRendererService,
 		private apDbResolverService: ApDbResolverService,
 		private loggerService: LoggerService,
-		private recursionLimit = 256,
 	) {
 		this.history = new Set();
 		this.logger = this.loggerService.getLogger('ap-resolve');
@@ -180,54 +203,12 @@ export class Resolver {
 @Injectable()
 export class ApResolverService {
 	constructor(
-		@Inject(DI.config)
-		private config: Config,
-
-		@Inject(DI.meta)
-		private meta: MiMeta,
-
-		@Inject(DI.usersRepository)
-		private usersRepository: UsersRepository,
-
-		@Inject(DI.notesRepository)
-		private notesRepository: NotesRepository,
-
-		@Inject(DI.pollsRepository)
-		private pollsRepository: PollsRepository,
-
-		@Inject(DI.noteReactionsRepository)
-		private noteReactionsRepository: NoteReactionsRepository,
-
-		@Inject(DI.followRequestsRepository)
-		private followRequestsRepository: FollowRequestsRepository,
-
-		private utilityService: UtilityService,
-		private systemAccountService: SystemAccountService,
-		private apRequestService: ApRequestService,
-		private httpRequestService: HttpRequestService,
-		private apRendererService: ApRendererService,
-		private apDbResolverService: ApDbResolverService,
-		private loggerService: LoggerService,
+		private moduleRef: ModuleRef,
 	) {
 	}
 
 	@bindThis
-	public createResolver(): Resolver {
-		return new Resolver(
-			this.config,
-			this.meta,
-			this.usersRepository,
-			this.notesRepository,
-			this.pollsRepository,
-			this.noteReactionsRepository,
-			this.followRequestsRepository,
-			this.utilityService,
-			this.systemAccountService,
-			this.apRequestService,
-			this.httpRequestService,
-			this.apRendererService,
-			this.apDbResolverService,
-			this.loggerService,
-		);
+	public async createResolver(): Promise<Resolver> {
+		return await this.moduleRef.create(Resolver);
 	}
 }
diff --git a/packages/backend/src/core/activitypub/models/ApImageService.ts b/packages/backend/src/core/activitypub/models/ApImageService.ts
index e7ece87b01..0496774c19 100644
--- a/packages/backend/src/core/activitypub/models/ApImageService.ts
+++ b/packages/backend/src/core/activitypub/models/ApImageService.ts
@@ -46,7 +46,7 @@ export class ApImageService {
 			throw new Error('actor has been suspended');
 		}
 
-		const image = await this.apResolverService.createResolver().resolve(value);
+		const image = await (await this.apResolverService.createResolver()).resolve(value);
 
 		if (!isDocument(image)) return null;
 
diff --git a/packages/backend/src/core/activitypub/models/ApNoteService.ts b/packages/backend/src/core/activitypub/models/ApNoteService.ts
index 214d32f67f..1fc5728c98 100644
--- a/packages/backend/src/core/activitypub/models/ApNoteService.ts
+++ b/packages/backend/src/core/activitypub/models/ApNoteService.ts
@@ -128,7 +128,7 @@ export class ApNoteService {
 	@bindThis
 	public async createNote(value: string | IObject, actor?: MiRemoteUser, resolver?: Resolver, silent = false): Promise<MiNote | null> {
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(value);
 
diff --git a/packages/backend/src/core/activitypub/models/ApPersonService.ts b/packages/backend/src/core/activitypub/models/ApPersonService.ts
index e52078ed0f..ebe8e9c964 100644
--- a/packages/backend/src/core/activitypub/models/ApPersonService.ts
+++ b/packages/backend/src/core/activitypub/models/ApPersonService.ts
@@ -310,7 +310,7 @@ export class ApPersonService implements OnModuleInit {
 		}
 
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 
 		const object = await resolver.resolve(uri);
 		if (object.id == null) throw new Error('invalid object.id: ' + object.id);
@@ -500,7 +500,7 @@ export class ApPersonService implements OnModuleInit {
 		//#endregion
 
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 
 		const object = hint ?? await resolver.resolve(uri);
 
@@ -678,7 +678,7 @@ export class ApPersonService implements OnModuleInit {
 
 		// リモートサーバーからフェッチしてきて登録
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 		return await this.createPerson(uri, resolver);
 	}
 
@@ -707,7 +707,7 @@ export class ApPersonService implements OnModuleInit {
 
 		this.logger.info(`Updating the featured: ${user.uri}`);
 
-		const _resolver = resolver ?? this.apResolverService.createResolver();
+		const _resolver = resolver ?? await this.apResolverService.createResolver();
 
 		// Resolve to (Ordered)Collection Object
 		const collection = await _resolver.resolveCollection(user.featured);
diff --git a/packages/backend/src/core/activitypub/models/ApQuestionService.ts b/packages/backend/src/core/activitypub/models/ApQuestionService.ts
index a2cdaf02ca..8ac2f21e26 100644
--- a/packages/backend/src/core/activitypub/models/ApQuestionService.ts
+++ b/packages/backend/src/core/activitypub/models/ApQuestionService.ts
@@ -45,7 +45,7 @@ export class ApQuestionService {
 	@bindThis
 	public async extractPollFromQuestion(source: string | IObject, resolver?: Resolver): Promise<IPoll> {
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 
 		const question = await resolver.resolve(source);
 		if (!isQuestion(question)) throw new Error('invalid type');
@@ -91,7 +91,7 @@ export class ApQuestionService {
 
 		// resolve new Question object
 		// eslint-disable-next-line no-param-reassign
-		if (resolver == null) resolver = this.apResolverService.createResolver();
+		if (resolver == null) resolver = await this.apResolverService.createResolver();
 		const question = await resolver.resolve(value);
 		this.logger.debug(`fetched question: ${JSON.stringify(question, null, 2)}`);
 
diff --git a/packages/backend/src/server/ServerModule.ts b/packages/backend/src/server/ServerModule.ts
index 111421472d..8259a2a9e4 100644
--- a/packages/backend/src/server/ServerModule.ts
+++ b/packages/backend/src/server/ServerModule.ts
@@ -13,7 +13,6 @@ import { NodeinfoServerService } from './NodeinfoServerService.js';
 import { ServerService } from './ServerService.js';
 import { WellKnownServerService } from './WellKnownServerService.js';
 import { GetterService } from './api/GetterService.js';
-import { ChannelsService } from './api/stream/ChannelsService.js';
 import { ActivityPubServerService } from './ActivityPubServerService.js';
 import { ApiLoggerService } from './api/ApiLoggerService.js';
 import { ApiServerService } from './api/ApiServerService.js';
@@ -31,24 +30,25 @@ import { UrlPreviewService } from './web/UrlPreviewService.js';
 import { ClientLoggerService } from './web/ClientLoggerService.js';
 import { OAuth2ProviderService } from './oauth/OAuth2ProviderService.js';
 
-import { MainChannelService } from './api/stream/channels/main.js';
-import { AdminChannelService } from './api/stream/channels/admin.js';
-import { AntennaChannelService } from './api/stream/channels/antenna.js';
-import { ChannelChannelService } from './api/stream/channels/channel.js';
-import { DriveChannelService } from './api/stream/channels/drive.js';
-import { GlobalTimelineChannelService } from './api/stream/channels/global-timeline.js';
-import { HashtagChannelService } from './api/stream/channels/hashtag.js';
-import { HomeTimelineChannelService } from './api/stream/channels/home-timeline.js';
-import { HybridTimelineChannelService } from './api/stream/channels/hybrid-timeline.js';
-import { LocalTimelineChannelService } from './api/stream/channels/local-timeline.js';
-import { QueueStatsChannelService } from './api/stream/channels/queue-stats.js';
-import { ServerStatsChannelService } from './api/stream/channels/server-stats.js';
-import { UserListChannelService } from './api/stream/channels/user-list.js';
-import { RoleTimelineChannelService } from './api/stream/channels/role-timeline.js';
-import { ChatUserChannelService } from './api/stream/channels/chat-user.js';
-import { ChatRoomChannelService } from './api/stream/channels/chat-room.js';
-import { ReversiChannelService } from './api/stream/channels/reversi.js';
-import { ReversiGameChannelService } from './api/stream/channels/reversi-game.js';
+import MainStreamConnection from '@/server/api/stream/Connection.js';
+import { MainChannel } from './api/stream/channels/main.js';
+import { AdminChannel } from './api/stream/channels/admin.js';
+import { AntennaChannel } from './api/stream/channels/antenna.js';
+import { ChannelChannel } from './api/stream/channels/channel.js';
+import { DriveChannel } from './api/stream/channels/drive.js';
+import { GlobalTimelineChannel } from './api/stream/channels/global-timeline.js';
+import { HashtagChannel } from './api/stream/channels/hashtag.js';
+import { HomeTimelineChannel } from './api/stream/channels/home-timeline.js';
+import { HybridTimelineChannel } from './api/stream/channels/hybrid-timeline.js';
+import { LocalTimelineChannel } from './api/stream/channels/local-timeline.js';
+import { QueueStatsChannel } from './api/stream/channels/queue-stats.js';
+import { ServerStatsChannel } from './api/stream/channels/server-stats.js';
+import { UserListChannel } from './api/stream/channels/user-list.js';
+import { RoleTimelineChannel } from './api/stream/channels/role-timeline.js';
+import { ChatUserChannel } from './api/stream/channels/chat-user.js';
+import { ChatRoomChannel } from './api/stream/channels/chat-room.js';
+import { ReversiChannel } from './api/stream/channels/reversi.js';
+import { ReversiGameChannel } from './api/stream/channels/reversi-game.js';
 import { SigninWithPasskeyApiService } from './api/SigninWithPasskeyApiService.js';
 
 @Module({
@@ -69,7 +69,7 @@ import { SigninWithPasskeyApiService } from './api/SigninWithPasskeyApiService.j
 		ServerService,
 		WellKnownServerService,
 		GetterService,
-		ChannelsService,
+		MainStreamConnection,
 		ApiCallService,
 		ApiLoggerService,
 		ApiServerService,
@@ -80,24 +80,24 @@ import { SigninWithPasskeyApiService } from './api/SigninWithPasskeyApiService.j
 		SigninService,
 		SignupApiService,
 		StreamingApiServerService,
-		MainChannelService,
-		AdminChannelService,
-		AntennaChannelService,
-		ChannelChannelService,
-		DriveChannelService,
-		GlobalTimelineChannelService,
-		HashtagChannelService,
-		RoleTimelineChannelService,
-		ChatUserChannelService,
-		ChatRoomChannelService,
-		ReversiChannelService,
-		ReversiGameChannelService,
-		HomeTimelineChannelService,
-		HybridTimelineChannelService,
-		LocalTimelineChannelService,
-		QueueStatsChannelService,
-		ServerStatsChannelService,
-		UserListChannelService,
+		MainChannel,
+		AdminChannel,
+		AntennaChannel,
+		ChannelChannel,
+		DriveChannel,
+		GlobalTimelineChannel,
+		HashtagChannel,
+		RoleTimelineChannel,
+		ChatUserChannel,
+		ChatRoomChannel,
+		ReversiChannel,
+		ReversiGameChannel,
+		HomeTimelineChannel,
+		HybridTimelineChannel,
+		LocalTimelineChannel,
+		QueueStatsChannel,
+		ServerStatsChannel,
+		UserListChannel,
 		OpenApiServerService,
 		OAuth2ProviderService,
 	],
diff --git a/packages/backend/src/server/api/StreamingApiServerService.ts b/packages/backend/src/server/api/StreamingApiServerService.ts
index 21f2f0b7e2..359c361ed4 100644
--- a/packages/backend/src/server/api/StreamingApiServerService.ts
+++ b/packages/backend/src/server/api/StreamingApiServerService.ts
@@ -8,18 +8,14 @@ import { Inject, Injectable } from '@nestjs/common';
 import * as Redis from 'ioredis';
 import * as WebSocket from 'ws';
 import { DI } from '@/di-symbols.js';
-import type { UsersRepository, MiAccessToken } from '@/models/_.js';
-import { NotificationService } from '@/core/NotificationService.js';
+import type { MiAccessToken } from '@/models/_.js';
 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 { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { AuthenticateService, AuthenticationError } from './AuthenticateService.js';
-import MainStreamConnection from './stream/Connection.js';
-import { ChannelsService } from './stream/ChannelsService.js';
+import MainStreamConnection, { ConnectionRequest } from './stream/Connection.js';
 import type * as http from 'node:http';
+import { ContextIdFactory, ModuleRef } from '@nestjs/core';
 
 @Injectable()
 export class StreamingApiServerService {
@@ -31,16 +27,9 @@ export class StreamingApiServerService {
 		@Inject(DI.redisForSub)
 		private redisForSub: Redis.Redis,
 
-		@Inject(DI.usersRepository)
-		private usersRepository: UsersRepository,
-
-		private cacheService: CacheService,
+		private moduleRef: ModuleRef,
 		private authenticateService: AuthenticateService,
-		private channelsService: ChannelsService,
-		private notificationService: NotificationService,
 		private usersService: UserService,
-		private channelFollowingService: ChannelFollowingService,
-		private channelMutingService: ChannelMutingService,
 	) {
 	}
 
@@ -94,14 +83,12 @@ export class StreamingApiServerService {
 				return;
 			}
 
-			const stream = new MainStreamConnection(
-				this.channelsService,
-				this.notificationService,
-				this.cacheService,
-				this.channelFollowingService,
-				this.channelMutingService,
-				user, app,
-			);
+			const contextId = ContextIdFactory.create();
+			this.moduleRef.registerRequestByContextId<ConnectionRequest>({
+				user,
+				token: app,
+			}, contextId);
+			const stream = await this.moduleRef.create(MainStreamConnection, contextId);
 
 			await stream.init();
 
diff --git a/packages/backend/src/server/api/endpoints/ap/get.ts b/packages/backend/src/server/api/endpoints/ap/get.ts
index 14286bc23e..ff03fce72b 100644
--- a/packages/backend/src/server/api/endpoints/ap/get.ts
+++ b/packages/backend/src/server/api/endpoints/ap/get.ts
@@ -43,7 +43,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private apResolverService: ApResolverService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const resolver = this.apResolverService.createResolver();
+			const resolver = await this.apResolverService.createResolver();
 			const object = await resolver.resolve(ps.uri);
 			return object;
 		});
diff --git a/packages/backend/src/server/api/endpoints/ap/show.ts b/packages/backend/src/server/api/endpoints/ap/show.ts
index fe48e7497a..140b054fcc 100644
--- a/packages/backend/src/server/api/endpoints/ap/show.ts
+++ b/packages/backend/src/server/api/endpoints/ap/show.ts
@@ -148,7 +148,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		if (this.utilityService.isSelfHost(host)) return null;
 
 		// リモートから一旦オブジェクトフェッチ
-		const resolver = this.apResolverService.createResolver();
+		const resolver = await this.apResolverService.createResolver();
 		// allow ap/show exclusively to lookup URLs that are cross-origin or non-canonical (like https://alice.example.com/@bob@bob.example.com -> https://bob.example.com/@bob)
 		const object = await resolver.resolve(uri, FetchAllowSoftFailMask.CrossOrigin | FetchAllowSoftFailMask.NonCanonicalId).catch((err) => {
 			if (err instanceof IdentifiableError) {
diff --git a/packages/backend/src/server/api/stream/ChannelsService.ts b/packages/backend/src/server/api/stream/ChannelsService.ts
index c0ef589dea..63ad9281b2 100644
--- a/packages/backend/src/server/api/stream/ChannelsService.ts
+++ b/packages/backend/src/server/api/stream/ChannelsService.ts
@@ -4,72 +4,54 @@
  */
 
 import { Injectable } from '@nestjs/common';
+import { HybridTimelineChannel } from './channels/hybrid-timeline.js';
+import { LocalTimelineChannel } from './channels/local-timeline.js';
+import { HomeTimelineChannel } from './channels/home-timeline.js';
+import { GlobalTimelineChannel } from './channels/global-timeline.js';
+import { MainChannel } from './channels/main.js';
+import { ChannelChannel } from './channels/channel.js';
+import { AdminChannel } from './channels/admin.js';
+import { ServerStatsChannel } from './channels/server-stats.js';
+import { QueueStatsChannel } from './channels/queue-stats.js';
+import { UserListChannel } from './channels/user-list.js';
+import { AntennaChannel } from './channels/antenna.js';
+import { DriveChannel } from './channels/drive.js';
+import { HashtagChannel } from './channels/hashtag.js';
+import { RoleTimelineChannel } from './channels/role-timeline.js';
+import { ChatUserChannel } from './channels/chat-user.js';
+import { ChatRoomChannel } from './channels/chat-room.js';
+import { ReversiChannel } from './channels/reversi.js';
+import { ReversiGameChannel } from './channels/reversi-game.js';
+import type { ChannelConstructor } from './channel.js';
 import { bindThis } from '@/decorators.js';
-import { HybridTimelineChannelService } from './channels/hybrid-timeline.js';
-import { LocalTimelineChannelService } from './channels/local-timeline.js';
-import { HomeTimelineChannelService } from './channels/home-timeline.js';
-import { GlobalTimelineChannelService } from './channels/global-timeline.js';
-import { MainChannelService } from './channels/main.js';
-import { ChannelChannelService } from './channels/channel.js';
-import { AdminChannelService } from './channels/admin.js';
-import { ServerStatsChannelService } from './channels/server-stats.js';
-import { QueueStatsChannelService } from './channels/queue-stats.js';
-import { UserListChannelService } from './channels/user-list.js';
-import { AntennaChannelService } from './channels/antenna.js';
-import { DriveChannelService } from './channels/drive.js';
-import { HashtagChannelService } from './channels/hashtag.js';
-import { RoleTimelineChannelService } from './channels/role-timeline.js';
-import { ChatUserChannelService } from './channels/chat-user.js';
-import { ChatRoomChannelService } from './channels/chat-room.js';
-import { ReversiChannelService } from './channels/reversi.js';
-import { ReversiGameChannelService } from './channels/reversi-game.js';
-import { type MiChannelService } from './channel.js';
 
 @Injectable()
 export class ChannelsService {
 	constructor(
-		private mainChannelService: MainChannelService,
-		private homeTimelineChannelService: HomeTimelineChannelService,
-		private localTimelineChannelService: LocalTimelineChannelService,
-		private hybridTimelineChannelService: HybridTimelineChannelService,
-		private globalTimelineChannelService: GlobalTimelineChannelService,
-		private userListChannelService: UserListChannelService,
-		private hashtagChannelService: HashtagChannelService,
-		private roleTimelineChannelService: RoleTimelineChannelService,
-		private antennaChannelService: AntennaChannelService,
-		private channelChannelService: ChannelChannelService,
-		private driveChannelService: DriveChannelService,
-		private serverStatsChannelService: ServerStatsChannelService,
-		private queueStatsChannelService: QueueStatsChannelService,
-		private adminChannelService: AdminChannelService,
-		private chatUserChannelService: ChatUserChannelService,
-		private chatRoomChannelService: ChatRoomChannelService,
-		private reversiChannelService: ReversiChannelService,
-		private reversiGameChannelService: ReversiGameChannelService,
 	) {
 	}
 
 	@bindThis
-	public getChannelService(name: string): MiChannelService<boolean> {
+	public getChannelConstructor(name: string): ChannelConstructor<boolean> {
 		switch (name) {
-			case 'main': return this.mainChannelService;
-			case 'homeTimeline': return this.homeTimelineChannelService;
-			case 'localTimeline': return this.localTimelineChannelService;
-			case 'hybridTimeline': return this.hybridTimelineChannelService;
-			case 'globalTimeline': return this.globalTimelineChannelService;
-			case 'userList': return this.userListChannelService;
-			case 'hashtag': return this.hashtagChannelService;
-			case 'roleTimeline': return this.roleTimelineChannelService;
-			case 'antenna': return this.antennaChannelService;
-			case 'channel': return this.channelChannelService;
-			case 'drive': return this.driveChannelService;
-			case 'serverStats': return this.serverStatsChannelService;
-			case 'queueStats': return this.queueStatsChannelService;
-			case 'admin': return this.adminChannelService;
-			case 'chatUser': return this.chatUserChannelService;
-			case 'chatRoom': return this.chatRoomChannelService;
-			case 'reversi': return this.reversiChannelService;
-			case 'reversiGame': return this.reversiGameChannelService;
+			case 'main': return MainChannel;
+			case 'homeTimeline': return HomeTimelineChannel;
+			case 'localTimeline': return LocalTimelineChannel;
+			case 'hybridTimeline': return HybridTimelineChannel;
+			case 'globalTimeline': return GlobalTimelineChannel;
+			case 'userList': return UserListChannel;
+			case 'hashtag': return HashtagChannel;
+			case 'roleTimeline': return RoleTimelineChannel;
+			case 'antenna': return AntennaChannel;
+			case 'channel': return ChannelChannel;
+			case 'drive': return DriveChannel;
+			case 'serverStats': return ServerStatsChannel;
+			case 'queueStats': return QueueStatsChannel;
+			case 'admin': return AdminChannel;
+			case 'chatUser': return ChatUserChannel;
+			case 'chatRoom': return ChatRoomChannel;
+			case 'reversi': return ReversiChannel;
+			case 'reversiGame': return ReversiGameChannel;
 
 			default:
 				throw new Error(`no such channel: ${name}`);
diff --git a/packages/backend/src/server/api/stream/Connection.ts b/packages/backend/src/server/api/stream/Connection.ts
index 222086c960..d19a223a21 100644
--- a/packages/backend/src/server/api/stream/Connection.ts
+++ b/packages/backend/src/server/api/stream/Connection.ts
@@ -6,19 +6,39 @@
 import * as WebSocket from 'ws';
 import type { MiUser } from '@/models/User.js';
 import type { MiAccessToken } from '@/models/AccessToken.js';
-import type { Packed } from '@/misc/json-schema.js';
-import type { NotificationService } from '@/core/NotificationService.js';
+import { NotificationService } from '@/core/NotificationService.js';
 import { bindThis } from '@/decorators.js';
 import { CacheService } from '@/core/CacheService.js';
 import { MiFollowing, MiUserProfile } from '@/models/_.js';
 import type { GlobalEvents, StreamEventEmitter } from '@/core/GlobalEventService.js';
 import { ChannelFollowingService } from '@/core/ChannelFollowingService.js';
 import { ChannelMutingService } from '@/core/ChannelMutingService.js';
-import { isJsonObject } from '@/misc/json-value.js';
 import type { JsonObject, JsonValue } from '@/misc/json-value.js';
-import type { ChannelsService } from './ChannelsService.js';
+import { isJsonObject } from '@/misc/json-value.js';
 import type { EventEmitter } from 'events';
 import type Channel from './channel.js';
+import type { ChannelConstructor } from './channel.js';
+import type { ChannelRequest } from './channel.js';
+import { ContextIdFactory, ModuleRef, REQUEST } from '@nestjs/core';
+import { Inject, Injectable, Scope } from '@nestjs/common';
+import { MainChannel } from '@/server/api/stream/channels/main.js';
+import { HomeTimelineChannel } from '@/server/api/stream/channels/home-timeline.js';
+import { LocalTimelineChannel } from '@/server/api/stream/channels/local-timeline.js';
+import { HybridTimelineChannel } from '@/server/api/stream/channels/hybrid-timeline.js';
+import { GlobalTimelineChannel } from '@/server/api/stream/channels/global-timeline.js';
+import { UserListChannel } from '@/server/api/stream/channels/user-list.js';
+import { HashtagChannel } from '@/server/api/stream/channels/hashtag.js';
+import { RoleTimelineChannel } from '@/server/api/stream/channels/role-timeline.js';
+import { AntennaChannel } from '@/server/api/stream/channels/antenna.js';
+import { ChannelChannel } from '@/server/api/stream/channels/channel.js';
+import { DriveChannel } from '@/server/api/stream/channels/drive.js';
+import { ServerStatsChannel } from '@/server/api/stream/channels/server-stats.js';
+import { QueueStatsChannel } from '@/server/api/stream/channels/queue-stats.js';
+import { AdminChannel } from '@/server/api/stream/channels/admin.js';
+import { ChatUserChannel } from '@/server/api/stream/channels/chat-user.js';
+import { ChatRoomChannel } from '@/server/api/stream/channels/chat-room.js';
+import { ReversiChannel } from '@/server/api/stream/channels/reversi.js';
+import { ReversiGameChannel } from '@/server/api/stream/channels/reversi-game.js';
 
 const MAX_CHANNELS_PER_CONNECTION = 32;
 
@@ -26,6 +46,7 @@ const MAX_CHANNELS_PER_CONNECTION = 32;
  * Main stream connection
  */
 // eslint-disable-next-line import/no-default-export
+@Injectable({ scope: Scope.TRANSIENT })
 export default class Connection {
 	public user?: MiUser;
 	public token?: MiAccessToken;
@@ -44,16 +65,16 @@ export default class Connection {
 	private fetchIntervalId: NodeJS.Timeout | null = null;
 
 	constructor(
-		private channelsService: ChannelsService,
+		private moduleRef: ModuleRef,
 		private notificationService: NotificationService,
 		private cacheService: CacheService,
 		private channelFollowingService: ChannelFollowingService,
 		private channelMutingService: ChannelMutingService,
-		user: MiUser | null | undefined,
-		token: MiAccessToken | null | undefined,
+		@Inject(REQUEST)
+		request: ConnectionRequest,
 	) {
-		if (user) this.user = user;
-		if (token) this.token = token;
+		if (request.user) this.user = request.user;
+		if (request.token) this.token = request.token;
 	}
 
 	@bindThis
@@ -232,28 +253,34 @@ export default class Connection {
 	 * チャンネルに接続
 	 */
 	@bindThis
-	public connectChannel(id: string, params: JsonObject | undefined, channel: string, pong = false) {
+	public async connectChannel(id: string, params: JsonObject | undefined, channel: string, pong = false) {
 		if (this.channels.length >= MAX_CHANNELS_PER_CONNECTION) {
 			return;
 		}
 
-		const channelService = this.channelsService.getChannelService(channel);
+		const channelConstructor = this.getChannelConstructor(channel);
 
-		if (channelService.requireCredential && this.user == null) {
+		if (channelConstructor.requireCredential && this.user == null) {
 			return;
 		}
 
-		if (this.token && ((channelService.kind && !this.token.permission.some(p => p === channelService.kind))
-			|| (!channelService.kind && channelService.requireCredential))) {
+		if (this.token && ((channelConstructor.kind && !this.token.permission.some(p => p === channelConstructor.kind))
+			|| (!channelConstructor.kind && channelConstructor.requireCredential))) {
 			return;
 		}
 
 		// 共有可能チャンネルに接続しようとしていて、かつそのチャンネルに既に接続していたら無意味なので無視
-		if (channelService.shouldShare && this.channels.some(c => c.chName === channel)) {
+		if (channelConstructor.shouldShare && this.channels.some(c => c.chName === channel)) {
 			return;
 		}
 
-		const ch: Channel = channelService.create(id, this);
+		const contextId = ContextIdFactory.create();
+		this.moduleRef.registerRequestByContextId<ChannelRequest>({
+			id: id,
+			connection: this,
+		}, contextId);
+		const ch: Channel = await this.moduleRef.create<Channel>(channelConstructor, contextId);
+
 		this.channels.push(ch);
 		ch.init(params ?? {});
 
@@ -264,6 +291,33 @@ export default class Connection {
 		}
 	}
 
+	@bindThis
+	public getChannelConstructor(name: string): ChannelConstructor<boolean> {
+		switch (name) {
+			case 'main': return MainChannel;
+			case 'homeTimeline': return HomeTimelineChannel;
+			case 'localTimeline': return LocalTimelineChannel;
+			case 'hybridTimeline': return HybridTimelineChannel;
+			case 'globalTimeline': return GlobalTimelineChannel;
+			case 'userList': return UserListChannel;
+			case 'hashtag': return HashtagChannel;
+			case 'roleTimeline': return RoleTimelineChannel;
+			case 'antenna': return AntennaChannel;
+			case 'channel': return ChannelChannel;
+			case 'drive': return DriveChannel;
+			case 'serverStats': return ServerStatsChannel;
+			case 'queueStats': return QueueStatsChannel;
+			case 'admin': return AdminChannel;
+			case 'chatUser': return ChatUserChannel;
+			case 'chatRoom': return ChatRoomChannel;
+			case 'reversi': return ReversiChannel;
+			case 'reversiGame': return ReversiGameChannel;
+
+			default:
+				throw new Error(`no such channel: ${name}`);
+		}
+	}
+
 	/**
 	 * チャンネルから切断
 	 * @param id チャンネルコネクションID
@@ -306,3 +360,8 @@ export default class Connection {
 		}
 	}
 }
+
+export interface ConnectionRequest {
+	user: MiUser | null | undefined,
+	token: MiAccessToken | null | undefined,
+}
diff --git a/packages/backend/src/server/api/stream/channel.ts b/packages/backend/src/server/api/stream/channel.ts
index 465ed4238c..86b073414d 100644
--- a/packages/backend/src/server/api/stream/channel.ts
+++ b/packages/backend/src/server/api/stream/channel.ts
@@ -22,7 +22,7 @@ export default abstract class Channel {
 	public abstract readonly chName: string;
 	public static readonly shouldShare: boolean;
 	public static readonly requireCredential: boolean;
-	public static readonly kind?: string | null;
+	public static readonly kind: string | null;
 
 	protected get user() {
 		return this.connection.user;
@@ -85,9 +85,9 @@ export default abstract class Channel {
 		return false;
 	}
 
-	constructor(id: string, connection: Connection) {
-		this.id = id;
-		this.connection = connection;
+	constructor(request: ChannelRequest) {
+		this.id = request.id;
+		this.connection = request.connection;
 	}
 
 	public send(payload: { type: string, body: JsonValue }): void;
@@ -111,9 +111,14 @@ export default abstract class Channel {
 	public onMessage?(type: string, body: JsonValue): void;
 }
 
-export type MiChannelService<T extends boolean> = {
+export interface ChannelRequest {
+	id: string,
+	connection: Connection,
+}
+
+export interface ChannelConstructor<T extends boolean> {
+	new(...args: any[]): Channel;
 	shouldShare: boolean;
 	requireCredential: T;
 	kind: T extends true ? string : string | null | undefined;
-	create: (id: string, connection: Connection) => Channel;
-};
+}
diff --git a/packages/backend/src/server/api/stream/channels/admin.ts b/packages/backend/src/server/api/stream/channels/admin.ts
index 355d5dba21..821888cca0 100644
--- a/packages/backend/src/server/api/stream/channels/admin.ts
+++ b/packages/backend/src/server/api/stream/channels/admin.ts
@@ -3,17 +3,26 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { bindThis } from '@/decorators.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class AdminChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class AdminChannel extends Channel {
 	public readonly chName = 'admin';
 	public static shouldShare = true;
 	public static requireCredential = true as const;
 	public static kind = 'read:admin:stream';
 
+	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+	) {
+		super(request);
+	}
+
 	@bindThis
 	public async init(params: JsonObject) {
 		// Subscribe admin stream
@@ -22,22 +31,3 @@ class AdminChannel extends Channel {
 		});
 	}
 }
-
-@Injectable()
-export class AdminChannelService implements MiChannelService<true> {
-	public readonly shouldShare = AdminChannel.shouldShare;
-	public readonly requireCredential = AdminChannel.requireCredential;
-	public readonly kind = AdminChannel.kind;
-
-	constructor(
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): AdminChannel {
-		return new AdminChannel(
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/antenna.ts b/packages/backend/src/server/api/stream/channels/antenna.ts
index e08562fdf9..ece9d2c8b1 100644
--- a/packages/backend/src/server/api/stream/channels/antenna.ts
+++ b/packages/backend/src/server/api/stream/channels/antenna.ts
@@ -3,14 +3,16 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
 import type { GlobalEvents } from '@/core/GlobalEventService.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class AntennaChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class AntennaChannel extends Channel {
 	public readonly chName = 'antenna';
 	public static shouldShare = false;
 	public static requireCredential = true as const;
@@ -18,12 +20,12 @@ class AntennaChannel extends Channel {
 	private antennaId: string;
 
 	constructor(
-		private noteEntityService: NoteEntityService,
+		@Inject(REQUEST)
+		request: ChannelRequest,
 
-		id: string,
-		connection: Channel['connection'],
+		private noteEntityService: NoteEntityService,
 	) {
-		super(id, connection);
+		super(request);
 		//this.onEvent = this.onEvent.bind(this);
 	}
 
@@ -55,24 +57,3 @@ class AntennaChannel extends Channel {
 		this.subscriber.off(`antennaStream:${this.antennaId}`, this.onEvent);
 	}
 }
-
-@Injectable()
-export class AntennaChannelService implements MiChannelService<true> {
-	public readonly shouldShare = AntennaChannel.shouldShare;
-	public readonly requireCredential = AntennaChannel.requireCredential;
-	public readonly kind = AntennaChannel.kind;
-
-	constructor(
-		private noteEntityService: NoteEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): AntennaChannel {
-		return new AntennaChannel(
-			this.noteEntityService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/channel.ts b/packages/backend/src/server/api/stream/channels/channel.ts
index c07eaac98d..1706b17526 100644
--- a/packages/backend/src/server/api/stream/channels/channel.ts
+++ b/packages/backend/src/server/api/stream/channels/channel.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import type { Packed } from '@/misc/json-schema.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
@@ -11,20 +11,23 @@ import { isRenotePacked, isQuotePacked } from '@/misc/is-renote.js';
 import { isInstanceMuted } from '@/misc/is-instance-muted.js';
 import { isUserRelated } from '@/misc/is-user-related.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class ChannelChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class ChannelChannel extends Channel {
 	public readonly chName = 'channel';
 	public static shouldShare = false;
 	public static requireCredential = false as const;
 	private channelId: string;
 
 	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+
 		private noteEntityService: NoteEntityService,
-		id: string,
-		connection: Channel['connection'],
 	) {
-		super(id, connection);
+		super(request);
 		//this.onNote = this.onNote.bind(this);
 	}
 
@@ -92,24 +95,3 @@ class ChannelChannel extends Channel {
 		this.subscriber.off('notesStream', this.onNote);
 	}
 }
-
-@Injectable()
-export class ChannelChannelService implements MiChannelService<false> {
-	public readonly shouldShare = ChannelChannel.shouldShare;
-	public readonly requireCredential = ChannelChannel.requireCredential;
-	public readonly kind = ChannelChannel.kind;
-
-	constructor(
-		private noteEntityService: NoteEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): ChannelChannel {
-		return new ChannelChannel(
-			this.noteEntityService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/chat-room.ts b/packages/backend/src/server/api/stream/channels/chat-room.ts
index eda333dd30..7f949032e2 100644
--- a/packages/backend/src/server/api/stream/channels/chat-room.ts
+++ b/packages/backend/src/server/api/stream/channels/chat-room.ts
@@ -3,14 +3,16 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { bindThis } from '@/decorators.js';
 import type { GlobalEvents } from '@/core/GlobalEventService.js';
 import type { JsonObject } from '@/misc/json-value.js';
 import { ChatService } from '@/core/ChatService.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class ChatRoomChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class ChatRoomChannel extends Channel {
 	public readonly chName = 'chatRoom';
 	public static shouldShare = false;
 	public static requireCredential = true as const;
@@ -18,12 +20,12 @@ class ChatRoomChannel extends Channel {
 	private roomId: string;
 
 	constructor(
-		private chatService: ChatService,
+		@Inject(REQUEST)
+		request: ChannelRequest,
 
-		id: string,
-		connection: Channel['connection'],
+		private chatService: ChatService,
 	) {
-		super(id, connection);
+		super(request);
 	}
 
 	@bindThis
@@ -55,24 +57,3 @@ class ChatRoomChannel extends Channel {
 		this.subscriber.off(`chatRoomStream:${this.roomId}`, this.onEvent);
 	}
 }
-
-@Injectable()
-export class ChatRoomChannelService implements MiChannelService<true> {
-	public readonly shouldShare = ChatRoomChannel.shouldShare;
-	public readonly requireCredential = ChatRoomChannel.requireCredential;
-	public readonly kind = ChatRoomChannel.kind;
-
-	constructor(
-		private chatService: ChatService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): ChatRoomChannel {
-		return new ChatRoomChannel(
-			this.chatService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/chat-user.ts b/packages/backend/src/server/api/stream/channels/chat-user.ts
index 5323484ed7..36f3f67b28 100644
--- a/packages/backend/src/server/api/stream/channels/chat-user.ts
+++ b/packages/backend/src/server/api/stream/channels/chat-user.ts
@@ -3,14 +3,16 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { bindThis } from '@/decorators.js';
 import type { GlobalEvents } from '@/core/GlobalEventService.js';
 import type { JsonObject } from '@/misc/json-value.js';
 import { ChatService } from '@/core/ChatService.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class ChatUserChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class ChatUserChannel extends Channel {
 	public readonly chName = 'chatUser';
 	public static shouldShare = false;
 	public static requireCredential = true as const;
@@ -18,12 +20,12 @@ class ChatUserChannel extends Channel {
 	private otherId: string;
 
 	constructor(
-		private chatService: ChatService,
+		@Inject(REQUEST)
+		request: ChannelRequest,
 
-		id: string,
-		connection: Channel['connection'],
+		private chatService: ChatService,
 	) {
-		super(id, connection);
+		super(request);
 	}
 
 	@bindThis
@@ -55,24 +57,3 @@ class ChatUserChannel extends Channel {
 		this.subscriber.off(`chatUserStream:${this.user!.id}-${this.otherId}`, this.onEvent);
 	}
 }
-
-@Injectable()
-export class ChatUserChannelService implements MiChannelService<true> {
-	public readonly shouldShare = ChatUserChannel.shouldShare;
-	public readonly requireCredential = ChatUserChannel.requireCredential;
-	public readonly kind = ChatUserChannel.kind;
-
-	constructor(
-		private chatService: ChatService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): ChatUserChannel {
-		return new ChatUserChannel(
-			this.chatService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/drive.ts b/packages/backend/src/server/api/stream/channels/drive.ts
index 03768f3d23..6f2eb2c8f9 100644
--- a/packages/backend/src/server/api/stream/channels/drive.ts
+++ b/packages/backend/src/server/api/stream/channels/drive.ts
@@ -3,17 +3,26 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { bindThis } from '@/decorators.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class DriveChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class DriveChannel extends Channel {
 	public readonly chName = 'drive';
 	public static shouldShare = true;
 	public static requireCredential = true as const;
 	public static kind = 'read:account';
 
+	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+	) {
+		super(request);
+	}
+
 	@bindThis
 	public async init(params: JsonObject) {
 		// Subscribe drive stream
@@ -22,22 +31,3 @@ class DriveChannel extends Channel {
 		});
 	}
 }
-
-@Injectable()
-export class DriveChannelService implements MiChannelService<true> {
-	public readonly shouldShare = DriveChannel.shouldShare;
-	public readonly requireCredential = DriveChannel.requireCredential;
-	public readonly kind = DriveChannel.kind;
-
-	constructor(
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): DriveChannel {
-		return new DriveChannel(
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/global-timeline.ts b/packages/backend/src/server/api/stream/channels/global-timeline.ts
index d7c781ad12..be6be1b1e7 100644
--- a/packages/backend/src/server/api/stream/channels/global-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/global-timeline.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import type { Packed } from '@/misc/json-schema.js';
 import { MetaService } from '@/core/MetaService.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
@@ -11,9 +11,11 @@ import { bindThis } from '@/decorators.js';
 import { RoleService } from '@/core/RoleService.js';
 import { isRenotePacked, isQuotePacked } from '@/misc/is-renote.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class GlobalTimelineChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class GlobalTimelineChannel extends Channel {
 	public readonly chName = 'globalTimeline';
 	public static shouldShare = false;
 	public static requireCredential = false as const;
@@ -21,14 +23,14 @@ class GlobalTimelineChannel extends Channel {
 	private withFiles: boolean;
 
 	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+
 		private metaService: MetaService,
 		private roleService: RoleService,
 		private noteEntityService: NoteEntityService,
-
-		id: string,
-		connection: Channel['connection'],
 	) {
-		super(id, connection);
+		super(request);
 		//this.onNote = this.onNote.bind(this);
 	}
 
@@ -74,28 +76,3 @@ class GlobalTimelineChannel extends Channel {
 		this.subscriber.off('notesStream', this.onNote);
 	}
 }
-
-@Injectable()
-export class GlobalTimelineChannelService implements MiChannelService<false> {
-	public readonly shouldShare = GlobalTimelineChannel.shouldShare;
-	public readonly requireCredential = GlobalTimelineChannel.requireCredential;
-	public readonly kind = GlobalTimelineChannel.kind;
-
-	constructor(
-		private metaService: MetaService,
-		private roleService: RoleService,
-		private noteEntityService: NoteEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): GlobalTimelineChannel {
-		return new GlobalTimelineChannel(
-			this.metaService,
-			this.roleService,
-			this.noteEntityService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/hashtag.ts b/packages/backend/src/server/api/stream/channels/hashtag.ts
index c911d63642..1456b4f262 100644
--- a/packages/backend/src/server/api/stream/channels/hashtag.ts
+++ b/packages/backend/src/server/api/stream/channels/hashtag.ts
@@ -3,28 +3,30 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { normalizeForSearch } from '@/misc/normalize-for-search.js';
 import type { Packed } from '@/misc/json-schema.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
 import { isRenotePacked, isQuotePacked } from '@/misc/is-renote.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class HashtagChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class HashtagChannel extends Channel {
 	public readonly chName = 'hashtag';
 	public static shouldShare = false;
 	public static requireCredential = false as const;
 	private q: string[][];
 
 	constructor(
-		private noteEntityService: NoteEntityService,
+		@Inject(REQUEST)
+		request: ChannelRequest,
 
-		id: string,
-		connection: Channel['connection'],
+		private noteEntityService: NoteEntityService,
 	) {
-		super(id, connection);
+		super(request);
 		//this.onNote = this.onNote.bind(this);
 	}
 
@@ -62,24 +64,3 @@ class HashtagChannel extends Channel {
 		this.subscriber.off('notesStream', this.onNote);
 	}
 }
-
-@Injectable()
-export class HashtagChannelService implements MiChannelService<false> {
-	public readonly shouldShare = HashtagChannel.shouldShare;
-	public readonly requireCredential = HashtagChannel.requireCredential;
-	public readonly kind = HashtagChannel.kind;
-
-	constructor(
-		private noteEntityService: NoteEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): HashtagChannel {
-		return new HashtagChannel(
-			this.noteEntityService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/home-timeline.ts b/packages/backend/src/server/api/stream/channels/home-timeline.ts
index eb5b4a8c6c..665c11b692 100644
--- a/packages/backend/src/server/api/stream/channels/home-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/home-timeline.ts
@@ -3,15 +3,17 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import type { Packed } from '@/misc/json-schema.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
 import { isRenotePacked, isQuotePacked } from '@/misc/is-renote.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class HomeTimelineChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class HomeTimelineChannel extends Channel {
 	public readonly chName = 'homeTimeline';
 	public static shouldShare = false;
 	public static requireCredential = true as const;
@@ -20,12 +22,12 @@ class HomeTimelineChannel extends Channel {
 	private withFiles: boolean;
 
 	constructor(
-		private noteEntityService: NoteEntityService,
+		@Inject(REQUEST)
+		request: ChannelRequest,
 
-		id: string,
-		connection: Channel['connection'],
+		private noteEntityService: NoteEntityService,
 	) {
-		super(id, connection);
+		super(request);
 		//this.onNote = this.onNote.bind(this);
 	}
 
@@ -98,24 +100,3 @@ class HomeTimelineChannel extends Channel {
 		this.subscriber.off('notesStream', this.onNote);
 	}
 }
-
-@Injectable()
-export class HomeTimelineChannelService implements MiChannelService<true> {
-	public readonly shouldShare = HomeTimelineChannel.shouldShare;
-	public readonly requireCredential = HomeTimelineChannel.requireCredential;
-	public readonly kind = HomeTimelineChannel.kind;
-
-	constructor(
-		private noteEntityService: NoteEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): HomeTimelineChannel {
-		return new HomeTimelineChannel(
-			this.noteEntityService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
index 2155e02012..54250d2a90 100644
--- a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import type { Packed } from '@/misc/json-schema.js';
 import { MetaService } from '@/core/MetaService.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
@@ -11,9 +11,11 @@ import { bindThis } from '@/decorators.js';
 import { RoleService } from '@/core/RoleService.js';
 import { isRenotePacked, isQuotePacked } from '@/misc/is-renote.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class HybridTimelineChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class HybridTimelineChannel extends Channel {
 	public readonly chName = 'hybridTimeline';
 	public static shouldShare = false;
 	public static requireCredential = true as const;
@@ -23,14 +25,14 @@ class HybridTimelineChannel extends Channel {
 	private withFiles: boolean;
 
 	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+
 		private metaService: MetaService,
 		private roleService: RoleService,
 		private noteEntityService: NoteEntityService,
-
-		id: string,
-		connection: Channel['connection'],
 	) {
-		super(id, connection);
+		super(request);
 		//this.onNote = this.onNote.bind(this);
 	}
 
@@ -118,28 +120,3 @@ class HybridTimelineChannel extends Channel {
 		this.subscriber.off('notesStream', this.onNote);
 	}
 }
-
-@Injectable()
-export class HybridTimelineChannelService implements MiChannelService<true> {
-	public readonly shouldShare = HybridTimelineChannel.shouldShare;
-	public readonly requireCredential = HybridTimelineChannel.requireCredential;
-	public readonly kind = HybridTimelineChannel.kind;
-
-	constructor(
-		private metaService: MetaService,
-		private roleService: RoleService,
-		private noteEntityService: NoteEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): HybridTimelineChannel {
-		return new HybridTimelineChannel(
-			this.metaService,
-			this.roleService,
-			this.noteEntityService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/local-timeline.ts b/packages/backend/src/server/api/stream/channels/local-timeline.ts
index 3d7ed6acdb..b394e9663f 100644
--- a/packages/backend/src/server/api/stream/channels/local-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/local-timeline.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import type { Packed } from '@/misc/json-schema.js';
 import { MetaService } from '@/core/MetaService.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
@@ -11,25 +11,27 @@ import { bindThis } from '@/decorators.js';
 import { RoleService } from '@/core/RoleService.js';
 import { isQuotePacked, isRenotePacked } from '@/misc/is-renote.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class LocalTimelineChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class LocalTimelineChannel extends Channel {
 	public readonly chName = 'localTimeline';
-	public static shouldShare = false;
+	public static shouldShare = false as const;
 	public static requireCredential = false as const;
 	private withRenotes: boolean;
 	private withReplies: boolean;
 	private withFiles: boolean;
 
 	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+
 		private metaService: MetaService,
 		private roleService: RoleService,
 		private noteEntityService: NoteEntityService,
-
-		id: string,
-		connection: Channel['connection'],
 	) {
-		super(id, connection);
+		super(request);
 		//this.onNote = this.onNote.bind(this);
 	}
 
@@ -84,28 +86,3 @@ class LocalTimelineChannel extends Channel {
 		this.subscriber.off('notesStream', this.onNote);
 	}
 }
-
-@Injectable()
-export class LocalTimelineChannelService implements MiChannelService<false> {
-	public readonly shouldShare = LocalTimelineChannel.shouldShare;
-	public readonly requireCredential = LocalTimelineChannel.requireCredential;
-	public readonly kind = LocalTimelineChannel.kind;
-
-	constructor(
-		private metaService: MetaService,
-		private roleService: RoleService,
-		private noteEntityService: NoteEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): LocalTimelineChannel {
-		return new LocalTimelineChannel(
-			this.metaService,
-			this.roleService,
-			this.noteEntityService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/main.ts b/packages/backend/src/server/api/stream/channels/main.ts
index 525f24c105..2ce53ac288 100644
--- a/packages/backend/src/server/api/stream/channels/main.ts
+++ b/packages/backend/src/server/api/stream/channels/main.ts
@@ -3,26 +3,28 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { isInstanceMuted, isUserFromMutedInstance } from '@/misc/is-instance-muted.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class MainChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class MainChannel extends Channel {
 	public readonly chName = 'main';
 	public static shouldShare = true;
 	public static requireCredential = true as const;
 	public static kind = 'read:account';
 
 	constructor(
-		private noteEntityService: NoteEntityService,
+		@Inject(REQUEST)
+		request: ChannelRequest,
 
-		id: string,
-		connection: Channel['connection'],
+		private noteEntityService: NoteEntityService,
 	) {
-		super(id, connection);
+		super(request);
 	}
 
 	@bindThis
@@ -61,24 +63,3 @@ class MainChannel extends Channel {
 		});
 	}
 }
-
-@Injectable()
-export class MainChannelService implements MiChannelService<true> {
-	public readonly shouldShare = MainChannel.shouldShare;
-	public readonly requireCredential = MainChannel.requireCredential;
-	public readonly kind = MainChannel.kind;
-
-	constructor(
-		private noteEntityService: NoteEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): MainChannel {
-		return new MainChannel(
-			this.noteEntityService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/queue-stats.ts b/packages/backend/src/server/api/stream/channels/queue-stats.ts
index 91b62255b4..a87863f26c 100644
--- a/packages/backend/src/server/api/stream/channels/queue-stats.ts
+++ b/packages/backend/src/server/api/stream/channels/queue-stats.ts
@@ -4,21 +4,26 @@
  */
 
 import Xev from 'xev';
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { bindThis } from '@/decorators.js';
 import { isJsonObject } from '@/misc/json-value.js';
 import type { JsonObject, JsonValue } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
 const ev = new Xev();
 
-class QueueStatsChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class QueueStatsChannel extends Channel {
 	public readonly chName = 'queueStats';
 	public static shouldShare = true;
 	public static requireCredential = false as const;
 
-	constructor(id: string, connection: Channel['connection']) {
-		super(id, connection);
+	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+	) {
+		super(request);
 		//this.onStats = this.onStats.bind(this);
 		//this.onMessage = this.onMessage.bind(this);
 	}
@@ -56,22 +61,3 @@ class QueueStatsChannel extends Channel {
 		ev.removeListener('queueStats', this.onStats);
 	}
 }
-
-@Injectable()
-export class QueueStatsChannelService implements MiChannelService<false> {
-	public readonly shouldShare = QueueStatsChannel.shouldShare;
-	public readonly requireCredential = QueueStatsChannel.requireCredential;
-	public readonly kind = QueueStatsChannel.kind;
-
-	constructor(
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): QueueStatsChannel {
-		return new QueueStatsChannel(
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/reversi-game.ts b/packages/backend/src/server/api/stream/channels/reversi-game.ts
index 7597a1cfa3..58fc16e98c 100644
--- a/packages/backend/src/server/api/stream/channels/reversi-game.ts
+++ b/packages/backend/src/server/api/stream/channels/reversi-game.ts
@@ -3,31 +3,32 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Inject, Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import type { MiReversiGame } from '@/models/_.js';
-import { DI } from '@/di-symbols.js';
 import { bindThis } from '@/decorators.js';
 import { ReversiService } from '@/core/ReversiService.js';
 import { ReversiGameEntityService } from '@/core/entities/ReversiGameEntityService.js';
 import { isJsonObject } from '@/misc/json-value.js';
 import type { JsonObject, JsonValue } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
 import { reversiUpdateKeys } from 'misskey-js';
+import { REQUEST } from '@nestjs/core';
 
-class ReversiGameChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class ReversiGameChannel extends Channel {
 	public readonly chName = 'reversiGame';
 	public static shouldShare = false;
 	public static requireCredential = false as const;
 	private gameId: MiReversiGame['id'] | null = null;
 
 	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+
 		private reversiService: ReversiService,
 		private reversiGameEntityService: ReversiGameEntityService,
-
-		id: string,
-		connection: Channel['connection'],
 	) {
-		super(id, connection);
+		super(request);
 	}
 
 	@bindThis
@@ -107,25 +108,3 @@ class ReversiGameChannel extends Channel {
 	}
 }
 
-@Injectable()
-export class ReversiGameChannelService implements MiChannelService<false> {
-	public readonly shouldShare = ReversiGameChannel.shouldShare;
-	public readonly requireCredential = ReversiGameChannel.requireCredential;
-	public readonly kind = ReversiGameChannel.kind;
-
-	constructor(
-		private reversiService: ReversiService,
-		private reversiGameEntityService: ReversiGameEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): ReversiGameChannel {
-		return new ReversiGameChannel(
-			this.reversiService,
-			this.reversiGameEntityService,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/reversi.ts b/packages/backend/src/server/api/stream/channels/reversi.ts
index 6e88939724..5eff73eeef 100644
--- a/packages/backend/src/server/api/stream/channels/reversi.ts
+++ b/packages/backend/src/server/api/stream/channels/reversi.ts
@@ -3,22 +3,24 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { bindThis } from '@/decorators.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class ReversiChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class ReversiChannel extends Channel {
 	public readonly chName = 'reversi';
 	public static shouldShare = true;
 	public static requireCredential = true as const;
 	public static kind = 'read:account';
 
 	constructor(
-		id: string,
-		connection: Channel['connection'],
+		@Inject(REQUEST)
+		request: ChannelRequest,
 	) {
-		super(id, connection);
+		super(request);
 	}
 
 	@bindThis
@@ -32,22 +34,3 @@ class ReversiChannel extends Channel {
 		this.subscriber.off(`reversiStream:${this.user!.id}`, this.send);
 	}
 }
-
-@Injectable()
-export class ReversiChannelService implements MiChannelService<true> {
-	public readonly shouldShare = ReversiChannel.shouldShare;
-	public readonly requireCredential = ReversiChannel.requireCredential;
-	public readonly kind = ReversiChannel.kind;
-
-	constructor(
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): ReversiChannel {
-		return new ReversiChannel(
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/role-timeline.ts b/packages/backend/src/server/api/stream/channels/role-timeline.ts
index fcfa26c38b..99e0b69023 100644
--- a/packages/backend/src/server/api/stream/channels/role-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/role-timeline.ts
@@ -3,28 +3,30 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
 import { RoleService } from '@/core/RoleService.js';
 import type { GlobalEvents } from '@/core/GlobalEventService.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class RoleTimelineChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class RoleTimelineChannel extends Channel {
 	public readonly chName = 'roleTimeline';
 	public static shouldShare = false;
 	public static requireCredential = false as const;
 	private roleId: string;
 
 	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+
 		private noteEntityService: NoteEntityService,
 		private roleservice: RoleService,
-
-		id: string,
-		connection: Channel['connection'],
 	) {
-		super(id, connection);
+		super(request);
 		//this.onNote = this.onNote.bind(this);
 	}
 
@@ -60,26 +62,3 @@ class RoleTimelineChannel extends Channel {
 		this.subscriber.off(`roleTimelineStream:${this.roleId}`, this.onEvent);
 	}
 }
-
-@Injectable()
-export class RoleTimelineChannelService implements MiChannelService<false> {
-	public readonly shouldShare = RoleTimelineChannel.shouldShare;
-	public readonly requireCredential = RoleTimelineChannel.requireCredential;
-	public readonly kind = RoleTimelineChannel.kind;
-
-	constructor(
-		private noteEntityService: NoteEntityService,
-		private roleservice: RoleService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): RoleTimelineChannel {
-		return new RoleTimelineChannel(
-			this.noteEntityService,
-			this.roleservice,
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/server-stats.ts b/packages/backend/src/server/api/stream/channels/server-stats.ts
index ec5352d12d..aece5435b0 100644
--- a/packages/backend/src/server/api/stream/channels/server-stats.ts
+++ b/packages/backend/src/server/api/stream/channels/server-stats.ts
@@ -4,21 +4,26 @@
  */
 
 import Xev from 'xev';
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import { bindThis } from '@/decorators.js';
 import { isJsonObject } from '@/misc/json-value.js';
 import type { JsonObject, JsonValue } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
 const ev = new Xev();
 
-class ServerStatsChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class ServerStatsChannel extends Channel {
 	public readonly chName = 'serverStats';
 	public static shouldShare = true;
 	public static requireCredential = false as const;
 
-	constructor(id: string, connection: Channel['connection']) {
-		super(id, connection);
+	constructor(
+		@Inject(REQUEST)
+		request: ChannelRequest,
+	) {
+		super(request);
 		//this.onStats = this.onStats.bind(this);
 		//this.onMessage = this.onMessage.bind(this);
 	}
@@ -54,22 +59,3 @@ class ServerStatsChannel extends Channel {
 		ev.removeListener('serverStats', this.onStats);
 	}
 }
-
-@Injectable()
-export class ServerStatsChannelService implements MiChannelService<false> {
-	public readonly shouldShare = ServerStatsChannel.shouldShare;
-	public readonly requireCredential = ServerStatsChannel.requireCredential;
-	public readonly kind = ServerStatsChannel.kind;
-
-	constructor(
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): ServerStatsChannel {
-		return new ServerStatsChannel(
-			id,
-			connection,
-		);
-	}
-}
diff --git a/packages/backend/src/server/api/stream/channels/user-list.ts b/packages/backend/src/server/api/stream/channels/user-list.ts
index 5bfd8fa68c..2f7345e150 100644
--- a/packages/backend/src/server/api/stream/channels/user-list.ts
+++ b/packages/backend/src/server/api/stream/channels/user-list.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Inject, Injectable } from '@nestjs/common';
+import { Inject, Injectable, Scope } from '@nestjs/common';
 import type { MiUserListMembership, UserListMembershipsRepository, UserListsRepository } from '@/models/_.js';
 import type { Packed } from '@/misc/json-schema.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
@@ -11,9 +11,11 @@ import { DI } from '@/di-symbols.js';
 import { bindThis } from '@/decorators.js';
 import { isRenotePacked, isQuotePacked } from '@/misc/is-renote.js';
 import type { JsonObject } from '@/misc/json-value.js';
-import Channel, { type MiChannelService } from '../channel.js';
+import Channel, { type ChannelRequest } from '../channel.js';
+import { REQUEST } from '@nestjs/core';
 
-class UserListChannel extends Channel {
+@Injectable({ scope: Scope.TRANSIENT })
+export class UserListChannel extends Channel {
 	public readonly chName = 'userList';
 	public static shouldShare = false;
 	public static requireCredential = false as const;
@@ -24,14 +26,18 @@ class UserListChannel extends Channel {
 	private withRenotes: boolean;
 
 	constructor(
+		@Inject(DI.userListsRepository)
 		private userListsRepository: UserListsRepository,
+
+		@Inject(DI.userListMembershipsRepository)
 		private userListMembershipsRepository: UserListMembershipsRepository,
-		private noteEntityService: NoteEntityService,
 
-		id: string,
-		connection: Channel['connection'],
+		@Inject(REQUEST)
+		request: ChannelRequest,
+
+		private noteEntityService: NoteEntityService,
 	) {
-		super(id, connection);
+		super(request);
 		//this.updateListUsers = this.updateListUsers.bind(this);
 		//this.onNote = this.onNote.bind(this);
 	}
@@ -130,32 +136,3 @@ class UserListChannel extends Channel {
 		clearInterval(this.listUsersClock);
 	}
 }
-
-@Injectable()
-export class UserListChannelService implements MiChannelService<false> {
-	public readonly shouldShare = UserListChannel.shouldShare;
-	public readonly requireCredential = UserListChannel.requireCredential;
-	public readonly kind = UserListChannel.kind;
-
-	constructor(
-		@Inject(DI.userListsRepository)
-		private userListsRepository: UserListsRepository,
-
-		@Inject(DI.userListMembershipsRepository)
-		private userListMembershipsRepository: UserListMembershipsRepository,
-
-		private noteEntityService: NoteEntityService,
-	) {
-	}
-
-	@bindThis
-	public create(id: string, connection: Channel['connection']): UserListChannel {
-		return new UserListChannel(
-			this.userListsRepository,
-			this.userListMembershipsRepository,
-			this.noteEntityService,
-			id,
-			connection,
-		);
-	}
-}