diff --git a/packages/backend/src/config.ts b/packages/backend/src/config.ts
index 3c70e0bbe..ef4ed6965 100644
--- a/packages/backend/src/config.ts
+++ b/packages/backend/src/config.ts
@@ -23,11 +23,9 @@ type RedisOptionsSource = Partial<RedisOptions> & {
 };
 
 /**
- * ユーザーが設定する必要のある情報
+ * 設定ファイルの型
  */
-export type Source = {
-	repository_url?: string;
-	feedback_url?: string;
+type Source = {
 	url: string;
 	port?: number;
 	socket?: string;
@@ -93,12 +91,63 @@ export type Source = {
 	videoThumbnailGenerator?: string;
 
 	signToActivityPubGet?: boolean;
+
+	perChannelMaxNoteCacheCount?: number;
+	perUserNotificationsMaxCount?: number;
 };
 
-/**
- * Misskeyが自動的に(ユーザーが設定した情報から推論して)設定する情報
- */
-export type Mixin = {
+export type Config = {
+	url: string;
+	port: number;
+	socket: string | undefined;
+	chmodSocket: string | undefined;
+	disableHsts: boolean | undefined;
+	db: {
+		host: string;
+		port: number;
+		db: string;
+		user: string;
+		pass: string;
+		disableCache?: boolean;
+		extra?: { [x: string]: string };
+	};
+	dbReplications: boolean | undefined;
+	dbSlaves: {
+		host: string;
+		port: number;
+		db: string;
+		user: string;
+		pass: string;
+	}[] | undefined;
+	meilisearch: {
+		host: string;
+		port: string;
+		apiKey: string;
+		ssl?: boolean;
+		index: string;
+		scope?: 'local' | 'global' | string[];
+	} | undefined;
+	proxy: string | undefined;
+	proxySmtp: string | undefined;
+	proxyBypassHosts: string[] | undefined;
+	allowedPrivateNetworks: string[] | undefined;
+	maxFileSize: number | undefined;
+	accesslog: string | undefined;
+	clusterLimit: number | undefined;
+	id: string;
+	outgoingAddress: string | undefined;
+	outgoingAddressFamily: 'ipv4' | 'ipv6' | 'dual' | undefined;
+	deliverJobConcurrency: number | undefined;
+	inboxJobConcurrency: number | undefined;
+	relashionshipJobConcurrency: number | undefined;
+	deliverJobPerSec: number | undefined;
+	inboxJobPerSec: number | undefined;
+	relashionshipJobPerSec: number | undefined;
+	deliverJobMaxAttempts: number | undefined;
+	inboxJobMaxAttempts: number | undefined;
+	proxyRemoteFiles: boolean | undefined;
+	signToActivityPubGet: boolean | undefined;
+
 	version: string;
 	host: string;
 	hostname: string;
@@ -117,10 +166,10 @@ export type Mixin = {
 	redis: RedisOptions & RedisOptionsSource;
 	redisForPubsub: RedisOptions & RedisOptionsSource;
 	redisForJobQueue: RedisOptions & RedisOptionsSource;
+	perChannelMaxNoteCacheCount: number;
+	perUserNotificationsMaxCount: number;
 };
 
-export type Config = Source & Mixin;
-
 const _filename = fileURLToPath(import.meta.url);
 const _dirname = dirname(_filename);
 
@@ -138,7 +187,7 @@ const path = process.env.MISSKEY_CONFIG_YML
 		? resolve(dir, 'test.yml')
 		: resolve(dir, 'default.yml');
 
-export function loadConfig() {
+export function loadConfig(): Config {
 	const meta = JSON.parse(fs.readFileSync(`${_dirname}/../../../built/meta.json`, 'utf-8'));
 	const clientManifestExists = fs.existsSync(_dirname + '/../../../built/_vite_/manifest.json');
 	const clientManifest = clientManifestExists ?
@@ -146,43 +195,72 @@ export function loadConfig() {
 		: { 'src/_boot_.ts': { file: 'src/_boot_.ts' } };
 	const config = yaml.load(fs.readFileSync(path, 'utf-8')) as Source;
 
-	const mixin = {} as Mixin;
-
 	const url = tryCreateUrl(config.url);
-
-	config.url = url.origin;
-
-	config.port = config.port ?? parseInt(process.env.PORT ?? '', 10);
-
-	mixin.version = meta.version;
-	mixin.host = url.host;
-	mixin.hostname = url.hostname;
-	mixin.scheme = url.protocol.replace(/:$/, '');
-	mixin.wsScheme = mixin.scheme.replace('http', 'ws');
-	mixin.wsUrl = `${mixin.wsScheme}://${mixin.host}`;
-	mixin.apiUrl = `${mixin.scheme}://${mixin.host}/api`;
-	mixin.authUrl = `${mixin.scheme}://${mixin.host}/auth`;
-	mixin.driveUrl = `${mixin.scheme}://${mixin.host}/files`;
-	mixin.userAgent = `Misskey/${meta.version} (${config.url})`;
-	mixin.clientEntry = clientManifest['src/_boot_.ts'];
-	mixin.clientManifestExists = clientManifestExists;
+	const version = meta.version;
+	const host = url.host;
+	const hostname = url.hostname;
+	const scheme = url.protocol.replace(/:$/, '');
+	const wsScheme = scheme.replace('http', 'ws');
 
 	const externalMediaProxy = config.mediaProxy ?
 		config.mediaProxy.endsWith('/') ? config.mediaProxy.substring(0, config.mediaProxy.length - 1) : config.mediaProxy
 		: null;
-	const internalMediaProxy = `${mixin.scheme}://${mixin.host}/proxy`;
-	mixin.mediaProxy = externalMediaProxy ?? internalMediaProxy;
-	mixin.externalMediaProxyEnabled = externalMediaProxy !== null && externalMediaProxy !== internalMediaProxy;
+	const internalMediaProxy = `${scheme}://${host}/proxy`;
+	const redis = convertRedisOptions(config.redis, host);
 
-	mixin.videoThumbnailGenerator = config.videoThumbnailGenerator ?
-		config.videoThumbnailGenerator.endsWith('/') ? config.videoThumbnailGenerator.substring(0, config.videoThumbnailGenerator.length - 1) : config.videoThumbnailGenerator
-		: null;
-
-	mixin.redis = convertRedisOptions(config.redis, mixin.host);
-	mixin.redisForPubsub = config.redisForPubsub ? convertRedisOptions(config.redisForPubsub, mixin.host) : mixin.redis;
-	mixin.redisForJobQueue = config.redisForJobQueue ? convertRedisOptions(config.redisForJobQueue, mixin.host) : mixin.redis;
-
-	return Object.assign(config, mixin);
+	return {
+		version,
+		url: url.origin,
+		port: config.port ?? parseInt(process.env.PORT ?? '', 10),
+		socket: config.socket,
+		chmodSocket: config.chmodSocket,
+		disableHsts: config.disableHsts,
+		host,
+		hostname,
+		scheme,
+		wsScheme,
+		wsUrl: `${wsScheme}://${host}`,
+		apiUrl: `${scheme}://${host}/api`,
+		authUrl: `${scheme}://${host}/auth`,
+		driveUrl: `${scheme}://${host}/files`,
+		db: config.db,
+		dbReplications: config.dbReplications,
+		dbSlaves: config.dbSlaves,
+		meilisearch: config.meilisearch,
+		redis,
+		redisForPubsub: config.redisForPubsub ? convertRedisOptions(config.redisForPubsub, host) : redis,
+		redisForJobQueue: config.redisForJobQueue ? convertRedisOptions(config.redisForJobQueue, host) : redis,
+		id: config.id,
+		proxy: config.proxy,
+		proxySmtp: config.proxySmtp,
+		proxyBypassHosts: config.proxyBypassHosts,
+		allowedPrivateNetworks: config.allowedPrivateNetworks,
+		maxFileSize: config.maxFileSize,
+		accesslog: config.accesslog,
+		clusterLimit: config.clusterLimit,
+		outgoingAddress: config.outgoingAddress,
+		outgoingAddressFamily: config.outgoingAddressFamily,
+		deliverJobConcurrency: config.deliverJobConcurrency,
+		inboxJobConcurrency: config.inboxJobConcurrency,
+		relashionshipJobConcurrency: config.relashionshipJobConcurrency,
+		deliverJobPerSec: config.deliverJobPerSec,
+		inboxJobPerSec: config.inboxJobPerSec,
+		relashionshipJobPerSec: config.relashionshipJobPerSec,
+		deliverJobMaxAttempts: config.deliverJobMaxAttempts,
+		inboxJobMaxAttempts: config.inboxJobMaxAttempts,
+		proxyRemoteFiles: config.proxyRemoteFiles,
+		signToActivityPubGet: config.signToActivityPubGet,
+		mediaProxy: externalMediaProxy ?? internalMediaProxy,
+		externalMediaProxyEnabled: externalMediaProxy !== null && externalMediaProxy !== internalMediaProxy,
+		videoThumbnailGenerator: config.videoThumbnailGenerator ?
+			config.videoThumbnailGenerator.endsWith('/') ? config.videoThumbnailGenerator.substring(0, config.videoThumbnailGenerator.length - 1) : config.videoThumbnailGenerator
+			: null,
+		userAgent: `Misskey/${version} (${config.url})`,
+		clientEntry: clientManifest['src/_boot_.ts'],
+		clientManifestExists: clientManifestExists,
+		perChannelMaxNoteCacheCount: config.perChannelMaxNoteCacheCount ?? 1000,
+		perUserNotificationsMaxCount: config.perUserNotificationsMaxCount ?? 300,
+	};
 }
 
 function tryCreateUrl(url: string) {
diff --git a/packages/backend/src/core/NoteCreateService.ts b/packages/backend/src/core/NoteCreateService.ts
index 2ccc610cf..dc440f568 100644
--- a/packages/backend/src/core/NoteCreateService.ts
+++ b/packages/backend/src/core/NoteCreateService.ts
@@ -334,7 +334,7 @@ export class NoteCreateService implements OnApplicationShutdown {
 		if (data.channel) {
 			this.redisClient.xadd(
 				`channelTimeline:${data.channel.id}`,
-				'MAXLEN', '~', '1000',
+				'MAXLEN', '~', this.config.perChannelMaxNoteCacheCount.toString(),
 				'*',
 				'note', note.id);
 		}
diff --git a/packages/backend/src/core/NotificationService.ts b/packages/backend/src/core/NotificationService.ts
index 02c577c19..aa4e22f89 100644
--- a/packages/backend/src/core/NotificationService.ts
+++ b/packages/backend/src/core/NotificationService.ts
@@ -17,12 +17,16 @@ import { PushNotificationService } from '@/core/PushNotificationService.js';
 import { NotificationEntityService } from '@/core/entities/NotificationEntityService.js';
 import { IdService } from '@/core/IdService.js';
 import { CacheService } from '@/core/CacheService.js';
+import { Config } from '@/config.js';
 
 @Injectable()
 export class NotificationService implements OnApplicationShutdown {
 	#shutdownController = new AbortController();
 
 	constructor(
+		@Inject(DI.config)
+		private config: Config,
+
 		@Inject(DI.redis)
 		private redisClient: Redis.Redis,
 
@@ -96,7 +100,7 @@ export class NotificationService implements OnApplicationShutdown {
 
 		const redisIdPromise = this.redisClient.xadd(
 			`notificationTimeline:${notifieeId}`,
-			'MAXLEN', '~', '300',
+			'MAXLEN', '~', this.config.perUserNotificationsMaxCount.toString(),
 			'*',
 			'data', JSON.stringify(notification));
 
diff --git a/packages/backend/src/server/api/endpoints/notes/timeline.ts b/packages/backend/src/server/api/endpoints/notes/timeline.ts
index 0aba31088..c53ebcbf4 100644
--- a/packages/backend/src/server/api/endpoints/notes/timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/timeline.ts
@@ -69,7 +69,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			//#region Construct query
 			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
 				ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-				.andWhere('note.id > :minId', { minId: this.idService.genId(new Date(Date.now() - (1000 * 60 * 60 * 24 * 10))) }) // 10日前まで
+				// パフォーマンス上の利点が無さそう？
+				//.andWhere('note.id > :minId', { minId: this.idService.genId(new Date(Date.now() - (1000 * 60 * 60 * 24 * 10))) }) // 10日前まで
 				.innerJoinAndSelect('note.user', 'user')
 				.leftJoinAndSelect('note.reply', 'reply')
 				.leftJoinAndSelect('note.renote', 'renote')