Unable to get data from Redis using NodeJs

Question

I have implemented redis cache in my node server.I am running redis docker container locally.I have keys stored in redis container which I am able to see but when I am trying to access then I am failed to get data.

Below is my code:

const redis = require('redis');

let redisClient;

redisClient = redis.createClient('127.0.0.1', 6379);

redisClient.connect();

redisClient.on('error', err => {
  console.log('Error ' + err);
});

redisClient.on('connect', () => {
  console.log('Connected to Redis');
});

 //Saving data here
 redisClient.set('Region', 'Asia', (err, reply) => {
 if (err) {
     console.log('error', err);
 }
 else {
     console.log(reply);
 }
});

//Fetching data here
redisClient.get('Region', (err, reply) => {
 if (err) {
    console.log('error', err);
 }
 else {
    console.log(reply);
 }
});

Here even though data is saved successfully in redis but I am not getting console statement after saving data.And I am also unable to fetch data from redis.I am only getting Connected to Redis console log.

Someone let me know what I have done wrong in my code.So far to me code seems fine.

Does this answer your question? How do I return the response from an asynchronous call? — Matt
– Matt, Commented Feb 8, 2023 at 8:16
You are calling get before the set even finished, but even more, you are calling both set and get before the connection is even established. — CherryDT
– CherryDT, Commented Feb 8, 2023 at 8:21

Simon Prickett · Accepted Answer · 2023-02-10 13:46:41Z

2

It looks like you are using the node-redis client. In v4, this supports promises. Using promises with async/await should make your code easier to follow:

import { createClient } from 'redis';

try {
  const client = createClient();

  await client.connect();

  await client.set('Region', 'Asia');
  const region = await client.get('Region');

  console.log(`Region is ${region}`);

  await client.quit();
} catch (e) {
  console.error('Oh no:');
  console.error(e);
}

answered Feb 10, 2023 at 13:46

Simon Prickett

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