Redis

A second built-in transporter is based on Redis database. This transporter takes advantage of publish/subscribe feature.

Installation

Before we start, we have to install required package:

$ npm i --save redis

Overview

In order to switch from TCP transport strategy to Redis pub/sub, we need to change an options object passed to the createMicroservice() method.

const app = await NestFactory.createMicroservice(ApplicationModule, {
  transport: Transport.REDIS,
  options: {
    url: 'redis://localhost:6379',
  },
});

Options

There are a bunch of available options that determine a transporter behaviour.