Redis Pub/Sub Client

A simple Redis Pub/Sub Client

Functionalities

• Provides a simple layer between the official redis client and the redis pub/sub functionality

Setup

Install the Redis Pub/Sub client:

npm install redis-pubsub-client

Require the Redis Pub/Sub client somewhere in your code:

const RedisPubSub = require('redis-pubsub-client');

Usage

Start by defining a redis config:

const config = {
    host: '127.0.0.1' // Redis server hostname/ip (optional)
    port: 32768, // Redis server port (optional)
    scope: 'test' // Global message scope (optional)
};

Now construct a new RedisClient like so:

const redisClient = new RedisPubSub(config);

Connect to the redis server:

const waitForRedis = async () => {
    await redisClient.connect();
    console.log('server ready');
};

waitForRedis();

You are now ready to subscribe to channels and publish messages!

Subscribe

How to subscribe to a channel?:

// Returns the unsubscribe function along the current subscribed channel
const exampleChannel = redisClient.subscribe('example', (data) => {
    console.log(data);
});

Publish

How to send a message to a channel?:

// Returns true/false based on the fact if the message was recieved by the server
const messageStatus = redisClient.publish('example', {
    message: 'Hello World'
});

Catch Errors

To catch all Redis server errors use the following function:

redisClient.error((e) => {
    console.log(e);
});

Disconnect

To cleanly disconnect from the Redis server use this function:

redisClient.disconnect();

Force Quit

If you need to exit immediately you can also use this function (This is not recommended since this will discard messages that are still in sending state)

redisClient.end();

License

MIT