Question 121684 in Redis Question posted in
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not able to connect to redis in nodejs

First thing first, the details:

node version: v16

Using redislabs cloud (v6.2.3)

npm package redis version 4.0.3

Here’s the code…

const redis = require("redis");
require("dotenv").config();

const client = redis.createClient({
  host: process.env.REDIS_URI,
  port: process.env.REDIS_PORT,
  password: process.env.REDIS_PASSWORD
});

client.on("connect", () => {
  console.log("Connected to our redis instance!");
  client.set("iAmAKey", "Value");
});

On running it doesn’t output anything 🙁 and just quits simply after some time.

Any help will be appreciated.
Thanks!

Tags:

4

Answers


  1. Chosen as BEST ANSWER
    0

    Well, I made it work now. Adding this as a reference for any future wanderer with the same issue.

    So the community suggested to use URL instead.

    const redis = require("redis");
require("dotenv").config();

(async () => {
  const client = redis.createClient({
    url: `redis://default:${process.env.REDIS_PASSWORD}@${process.env.REDIS_URI}:${process.env.REDIS_PORT}`,
  });

  client.on("error", (err) => console.log("Redis Client Error", err));

  await client.connect();

  await client.set("key", "value");
  console.log("Redis Connected!")
  const value = await client.get("key");
  console.log(value);
})();

    Here's the issue for future reference: Not able to connect to redis-labs cloud redis server #1892


  2. 0

    The call to .createClient creates a client but doesn’t actually connect to Redis. So the connect event never fires. Node Redis 4.x supports promises so you really don’t need the callback at all. You can accomplish the same thing with:

    const redis = require("redis");
const client = redis.createClient();

await client.connect();
await client.set('foo', 'bar');
let foo = client.get('foo');

    Note that I removed the usage of dotenv and just have it connect to Redis on localhost in my sample code for brevity.

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  3. 0

    additionnel information to @Amresh this is what worked for me:

      url: `redis://${process.env.REDIS_PASSWORD}@${process.env.REDIS_URI}:${process.env.REDIS_PORT}`,

    without default word.

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  4. 0

    I faced the same issue in Node 14 using Redis ^4.3.1. Changing the version to ^3.1.2 worked for me.

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