CODEWITHSUNDEEP
javascriptnode.jsredisnode-redis
Amresh Prasad Sinha
Amresh Prasad Sinha

Reputation: 136

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!

Upvotes: 1

Views: 6206

Answers (4)

Vishvas Jaiswal
Vishvas Jaiswal

Reputation: 1

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

Upvotes: 0

Ismail
Ismail

Reputation: 75

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.

Upvotes: 0

Amresh Prasad Sinha
Amresh Prasad Sinha

Reputation: 136

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

Upvotes: 6

Guy Royse
Guy Royse

Reputation: 4312

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.

Upvotes: 1

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