CODEWITHSUNDEEP
apinestjsmicroservicesgateway
etrix
etrix

Reputation: 79

NestJS backend as a microservice and an API Rest the same time?

Can a NestJS backend be a microservice and an API Rest as the same time ?

main.ts for a microservice:

const microservice = await NestFactory.createMicroservice<MicroserviceOptions>(
  AppModule,
  {
    transport: Transport.KAFKA,
    // ...options, client, consumer, etc...
  },
);

await microservice.listen();

main.ts for a REST API:

const app = await NestFactory.create(AppModule)
await app.listen(3000);

How to mix use create and createMicroservice in the same main.ts ? Should I use a Gateway API with the serviceA as microservice and serviceB as REST API ?

Upvotes: 2

Views: 2415

Answers (1)

Jay McDoniel
Jay McDoniel

Reputation: 70131

Pretty sure what you're looking for is a hybrid application. You create the regular HTTP application with NestFactory.create() and then you use app.connectMicroservice() to add microservices that should run alongside the HTTP server.

Example from the docs:


const app = await NestFactory.create(AppModule);
// microservice #1
const microserviceTcp = app.connectMicroservice<MicroserviceOptions>({
  transport: Transport.TCP,
  options: {
    port: 3001,
  },
});
// microservice #2
const microserviceRedis = app.connectMicroservice<MicroserviceOptions>({
  transport: Transport.REDIS,
  options: {
    host: 'localhost',
    port: 6379,
  },
});

await app.startAllMicroservices();
await app.listen(3001);

Upvotes: 4

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