fix(redis): add reconnect strategy to prevent closed client errors

src/redis.ts

@@ -2,9 +2,18 @@ import { createClient } from 'redis';
 
 const redis = createClient({
   url: process.env.REDIS_URL,
-  socket: { connectTimeout: 3000, socketTimeout: 5000 },
+  socket: {
+    connectTimeout: 3000,
+    socketTimeout: 5000,
+    reconnectStrategy: (retries) => Math.min(retries * 100, 3000),
+  },
 });
+
 redis.on('error', (err) => console.error('[redis] error:', err.message));
-redis.connect().catch((err) => console.error('[redis] connect error:', err));
+redis.on('connect', () => console.log('[redis] connected'));
+redis.on('reconnecting', () => console.log('[redis] reconnecting...'));
+redis.on('end', () => console.log('[redis] connection ended'));
+
+redis.connect().catch((err) => console.error('[redis] initial connect error:', err.message));
 
 export default redis;