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Node Redis Async Await | All About

Did you know that the Node Redis async/await refers to using the asynchronous programming paradigm with the Redis client library in a Node.js application?

Asynchronous programming is key in Node.js to handle non-blocking I/O operations. It allows our application to be responsive and efficient while waiting for I/O operations like network requests to complete.

With Async/await in ECMAScript 2017 and its use in Node.js, managing asynchronous code has become more readable and manageable.

How to use Async/Await with the Redis client library

Let’s take a look at how to use async/await with the Redis client library:

• • First, we have to import the Redis client library of our choice as seen here:

    const redis = require('redis'); // For node-redis
// or
const Redis = require('ioredis'); // For ioredis

  • Then, we have to wrap our Redis-related code in an async function. This lets us use await inside the function to handle asynchronous Redis operations:

    async function redisAsyncExample() {
// Inside this function, you can use the 'await' keyword for Redis operations.
}
  • Now, it is time to create an instance of the Redis client and connect to our Redis server. If we are using node-redis, this example shows how to use the promisify function to convert callback-based Redis commands into promise-based operations:

    const client = redis.createClient();
const { promisify } = require('util');
const getAsync = promisify(client.get).bind(client);

    In case we are using ioredis, we can use the promise-based API:

    const client = new Redis();
  • Then, we can use the await keyword in the async function to perform Redis operations asynchronously:

    async function redisAsyncExample() {
try {
const value = await getAsync('myKey'); // Using 'await' with Redis operation
console.log('Value:', value);
} catch (error) {
console.error('Error:', error);
} finally {
client.quit(); // Close the Redis connection when done
}
}
  • Now, we can execute the async function by calling it.

At the end of the day, we can write more readable and sequential-looking asynchronous code by using async/await with the Redis client library.
Furthermore, it simplifies error handling and makes it easier to manage the flow of our application.

However, async/await is only effective within asynchronous contexts so we have to make sure to structure our code accordingly.

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Conclusion

In summary, our Support Techs introduced us to Node Redis Async Await.