なんかもうめっちゃ変えた

packages/backend/src/redis.ts

@@ -0,0 +1,15 @@
+import Redis from 'ioredis';
+import { loadConfig } from '@/config.js';
+
+export function createRedisConnection(): Redis.Redis {
+	const config = loadConfig();
+
+	return new Redis({
+		port: config.redis.port,
+		host: config.redis.host,
+		family: config.redis.family == null ? 0 : config.redis.family,
+		password: config.redis.pass,
+		keyPrefix: `${config.redis.prefix}:`,
+		db: config.redis.db ?? 0,
+	});
+}