Redis giving error even after redis connected in nodejs

Question

I have redis installed on my system and its running as well. redis installed and running

from node application, im using below code to work with redis.

redis.js

 const redis = require("redis");
let client = redis.createClient(6379, '127.0.0.1', {});
let isRedis = false;
client.on("connect", function () {
 console.log(`connected to redis`);
 isRedis = true;
});
client.on("error", function (err) {
 console.log("redis connection error " + err);
 throw err;
});
client.on("end", function (err) {
 console.log("redis connection end " + err);
});
module.exports = {
 SetRedis,
 GetKeys,
 GetRedis,
 GetKeyRedis,
 delRedis
};

im using node index.js command to run the application which should also give me "connected to redis" when the connection is established, but i'm not getting this message on my console .

the npm package is also present in package.json

enter image description here

Answer 1

Node Redis 4.x doesn't allow you to pass in discrete arguments for the host and port. The canonical example of connecting to Redis with Node Redis is this:

import { createClient } from 'redis';
(async () => {
 const client = createClient();
 client.on('error', (err) => console.log('Redis Client Error', err));
 await client.connect();
 await client.set('key', 'value');
 const value = await client.get('key');
})();

If you want to connect to somewhere other than localhost on port 6379, I recommend using a URL. Like this:

createClient({ url: 'redis://awesome.redis.server:6380' });

But if you want finer control, you can find all the gritty configuration options in the documentation on GitHub.

Answer 2

I guess you are making mistake while making connection. It should have been

let client = redis.createClient('127.0.0.1', 6379, {});

rather than

let client = redis.createClient(6379, '127.0.0.1', {});

• Lalit Dubey: that too not working.
• Varun Mehta: have you added client.connect(); ? As I can't see in your code snippet.
• Lalit Dubey: can you please let me know where to add in redis.js. may be you can make changes in redis.js which i mentioned above.

Answer 3

Working redis.js,

 const redis = require("redis");
let isRedis = false;
(async () => {
let client = redis.createClient(6379, '127.0.0.1', {});// create config
client.on("connect", function () {
 console.log(`connected to redis`);
 isRedis = true;
});
client.on("error", function (err) {
 console.log("redis connection error " + err);
 throw err;
});
client.on("end", function (err) {
 console.log("redis connection end " + err);
});
function GetKeyRedis(key) {
 return new Promise(function (resolve, reject) {
 console.log("dd----",key,isRedis);
 if (isRedis) {
 client.get(key).then((data,err) => {
 if(err){
 reject(err);
 }
 if(data){
 resolve(data)
 } else {
 resolve(false);
 }
 });
 } else {
 resolve(false);
 }
 });
}
module.exports = {
 GetKeyRedis
};
await client.connect();
})();