如何将nodejs redis客户端连接到redis云服务器？

Question

const redis = require('redis');

const client = redis.createClient({
  host: 'redis-19606.redislabs.com',
  port: 19606,
  password: 'password'
});

client.on('ready', () => {
  console.log('redis is connected');
});

client.on('error', (err) => {
  console.log('redis is disconnected: ', err);
});

(async () => {
  try {
    await client.connect();
  } catch (error) {
    console.error('error while connecting redis', error);
  }
})();

This somehow does not seem to work. What am I doing wrong? It keeps connecting to 127.0.0.1:6379 which is the default config instead of what I am passing. This is only happening with nodejs client of redis. go-redis the golang client for redis is working flawlessly.

Answer 1

Just a guess, but which Node Redis version do you use? I had difficulties upgrading myself. The configuration of the client has changed since version 4.xx Since version 4.xx you have to use a confiuration according to Client Configuration . Therefore use

const client = redis.createClient({
  socket: {
    host: 'redis-19606.redislabs.com',
    port: 19606,
  }
});

or use a URL

const client = redis.createClient({
  url: "redis://redis-19606.redislabs.com:19606"
});

Your client configuration matches the Node Redis version 3.xx but not 4.xx Please see Redis NPM v3.1.2 and Redis NPM v4.0.1 for details.

Answer 2

you should maintain this format of Redis connecting string:

redis://:YOUR_PASSWORD@YOUR_ENDPOINT:YOUR_PORT

Answer 3

1. What version of redis are you using?
2. Do not explicitly conect to redis by writing "client.connect()" but instead use this after setting host, port and password:

    redisClient.on("connect", () => {})

and then you can use redisClient variable to get and set values.

3. Also if you're trying to connect to a redislabs server then I think your host name might be incorrect and double check your host from redislabs.

Answer 4

Try this new Redis("redis://username:authpassword@127.0.0.1:6380/4");

Check the documentation Link