Server bootstrap

To get started, make sure @nestjs/microservices is installed within your project. This module provides the client, server, and accompanying utilities needed to convert a Nest.js API application into a microservices application. Finally, we will modify our blog application’s bootstrap to enable microservices.

async function bootstrap() {
    const app = await NestFactory.create(AppModule);
    app.connectMicroservice({
        transport: Transport.TCP,
        options: {
            port: 5667
        }
    });

    await app.startAllMicroservicesAsync();
    await app.listen(3001);
}

The connectMicroservice method instructs the NestApplication to setup a new NestMicroservice context. The object provides the options for setting up the NestMicroservice context. Here, we are keeping things simple and using the standard TCP transport provided with Nest.js. A call to startAllMicroservicesAsync starts up the NestMicroservice context. Be sure to do this before calling...