nest-cluster.ts

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import * as os from 'os';

const cluster = require('node:cluster');
const numCPUs = os.cpus().length;

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  await app.listen(3000);
}
if(cluster.isMaster){
  console.log(`Master server started on ${process.pid}`);
  for (let i = 0; i < numCPUs; i++) {
      cluster.fork();
  }
  cluster.on('exit', (worker, code, signal) => {
      console.log(`Worker ${worker.process.pid} died. Restarting`);
      cluster.fork();
  })
} else {
  console.log(`Cluster server started on ${process.pid}`)
  bootstrap();
}