Enabling the round-robin scheduler algo, since Win doesn't enable it by default

node_cluster_forking.js

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

cluster.schedulingPolicy = cluster.SCHED_RR; // enables the round-robin scheduler algo, since Win doesn't enable it by default

if (cluster.isMaster) {
  console.log(`Master ${process.pid} is running`);

  // Fork workers
  for (let i = 0; i < numCPUs; i++) {
    cluster.fork();
  }

} else {
  // Workers sharing same TCP connection
  http.createServer((req, res) => {
    console.log(`worker ${process.pid} working`);
    res.writeHead(200);
    res.end('hello world\n');
  }).listen(2019);

  console.log(`Worker ${process.pid} started`);
}