我正在尝试从 heroku 连接到在线 redis 服务器，但我的连接被拒绝

Question

I am using the Redis package for Node.js ( ioredis ), I have a redis cluster hosted on ScaleGrid that I am trying to connect to from heroku but i keep getting the error [ioredis] Unhandled error event: Error: connect ECONNREFUSED 127.0.0.1:6379 at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1106:14) Redis Error: { ReplyError: NOAUTH Authentication required. . This is my code

//This is what my redis uri provided by ScaleGrid uri looks like, this is not exact string though
REDIS_URI=SG-Stack-12345.servers.mongodirector.com:6379

import session from 'express-session';
import Redis from 'ioredis';
import connectRedis from 'connect-redis';

const redisClient = process.env.REDIS_URI;

const redis = new Redis(redisClient);
const redisStore = connectRedis(session);

redis.on('error', (err) => {
  console.log('Redis Error:', err);
});

app.use(session({
  secret: process.env.SESSION_SECRET,
  name: '_redisSession',
  resave: false,
  saveUninitialized: true,
  cookie: { secure: false },
  store: new redisStore({ client: redis, ttl: 86400 }),
}));

Please how do i solve this issue? and also why do i still get this Error: connect ECONNREFUSED 127.0.0.1:6379

PS Redis works perfectly on my localhost

Answer 1

I realized all i needed was to send the password for authentication immediately after the redis client connects (client.auth(password) . I had to settle for redislabs enterprise for my redis hosting and also had to change from ioredis package to redis package because of some strange errors. This is the code below

redis.js

import { createClient } from 'redis';

const {
  PASSWORD: password,
  REDIS_HOST: host, // On localhost, set to 'localhost' or '127.0.0.1'
  REDIS_PORT: port, // On localhost,  set to 6379
} = process.env;

// connect to Redis host with port and host set as environment variables
const client = createClient(port, host, { no_ready_check: true });

// If password is in environment variable, send password to the host for authentication
if (password) {
  client.auth(password, (err) => {
    if (err) throw err;
  });
}

client.on('connect', () => console.log('connected to Redis'));

client.on('error', (err) => {
  console.log('Redis Error:', err);
});

export default client;

This is optional, it only shows how the connected redis client is utilized in the index file.

index.js

import session from 'express-session';
import connectRedis from 'connect-redis';
import client from './redis'

const redisStore = connectRedis(session);

app.use(session({
  secret: 'IwontTell',
  name: '_stackOverflow',
  resave: false,
  saveUninitialized: true,
  cookie: { secure: false },
  store: new redisStore({ client, ttl: 86400 }),
}));

This works perfecly both on localhost and online. Hope this helps someone