Redis client stucks in reconnection loop

[sergeyzwezdin]

Description

import { createClient } from 'redis'

// ...

        this.redisClient = createClient({
            url: 'redis://localhost:6379',
            disableOfflineQueue: true,
            socket: {
                connectTimeout: 1000,
            },
        })
            .on('error', () => {
                console.log('🙉 REDIS ERROR')
            })
            .on('connect', () => {
                console.log('🙃 REDIS CONNECT')
            })
            .on('ready', () => {
                console.log('😎 REDIS READY')
            })
            .on('end', () => {
                console.log('👋 REDIS END')
            })
            .on('close', () => {
                console.log('👊 REDIS CLOSE')
            })
            .on('reconnecting', () => {
                console.log('🫠  REDIS RECONNECTING')
            })
            .on('reconnect', () => {
                console.log('🤗 REDIS RECONNECT')
            })
            .on('invalidate', () => {
                console.log('🫡 REDIS INVALIDATE')
            })

Steps to reproduce:

1. Start Redis
2. Run code listed above
3. Terminal output:

🙃 REDIS CONNECT
😎 REDIS READY

4. Stop Redis
5. Terminal output:

🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙃 REDIS CONNECT
🙉 REDIS ERROR
😎 REDIS READY

Notice last REDIS READY.
Next, once Redis server restarted it could not reconnect.

The bug was introduced starting 5.0.0. Works okay on 4.7.0

Node.js Version

24.7.0

Redis Server Version

7.4.6

Node Redis Version

5.9.0

Platform

macOS

Logs

[nkaradzhov]

@sergeyzwezdin thanks for raising this, will take a look

[nkaradzhov]

@sergeyzwezdin how exactly are you starting/stopping the redis server?

This is my code:

import { createClient } from "redis";

const client = createClient({
  url: `redis://localhost:6379`,
  disableOfflineQueue: true,
  socket: {
    connectTimeout: 1000,
  },
})
  .on("error", () => {
    console.log("🙉 REDIS ERROR");
  })
  .on("connect", () => {
    console.log("🙃 REDIS CONNECT");
  })
  .on("ready", () => {
    console.log("😎 REDIS READY");
  })
  .on("end", () => {
    console.log("👋 REDIS END");
  })
  .on("close", () => {
    console.log("👊 REDIS CLOSE");
  })
  .on("reconnecting", () => {
    console.log("🫠  REDIS RECONNECTING");
  })
  .on("reconnect", () => {
    console.log("🤗 REDIS RECONNECT");
  })
  .on("invalidate", () => {
    console.log("🫡 REDIS INVALIDATE");
  });

await client.connect()

> npx tsx index.ts

🙃 REDIS CONNECT
😎 REDIS READY                                // ---------------------> here i do brew services stop redis
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING
🙉 REDIS ERROR
🫠  REDIS RECONNECTING             // ---------------------> here i do brew services start redis
🙃 REDIS CONNECT
😎 REDIS READY

[gustavopaes]

I have the same behavior.

Part of code:

this.client = createClient({ ...createClientConfig });
...

this.client
                .on('error', (err) => {
                    this.logger.warn('Redis client error', err);
                })
                .on('connect', () => {
                    this.logger.info('Redis client initiating a connection to server');
                })
                .on('ready', () => {
                    this.logger.info('Redis client is ready to use');
                })
                .on('end', () => {
                    this.logger.info('Redis client has been closed due quit or disconnect command');
                })
                .on('reconnecting', () => {
                    this.logger.info('Redis client is trying to reconnect to server');
                });

            await this.client.connect();

Logs:

13:29:42 Redis client error <----- stop docker redis container
13:29:42 Redis client is trying to reconnect to server
13:29:42 Redis client error
13:29:42 Redis client initiating a connection to server
13:29:42 Redis client error
13:29:42 Redis client is trying to reconnect to server
13:29:42 Redis client is trying to reconnect to server
13:29:42 Redis client initiating a connection to server
13:29:42 Redis client error
13:29:42 Redis client error
13:29:42 Redis client initiating a connection to server
13:29:42 Redis client error
13:29:42 Redis client is ready to use 
13:29:42 Redis client is ready to use
13:29:42 Redis client is ready to use

I did not started container again and redis is ready to use.

nodejs: v22.20.0
redis server: 7.2
node redis: 5.9.0

Same code with node redis 4.7.1 works properly

[sergeyzwezdin]

@sergeyzwezdin how exactly are you starting/stopping the redis server?

just ran it in local docker and literally stopping/starting the container