Fork Process

import cluster from 'cluster';
import { cpus } from 'os';

export function forkProcess(proc) {
  const cores = cpus();
  if (cluster.isMaster) {
    console.log(`Master ${process.pid} is running, forking process onto ${cores.length} cores`);
    cores.forEach(core => cluster.fork());
    cluster.on('exit', worker => console.log(`worker ${worker.process.pid} died`));
  } else {
    console.log(`App started on worker ${process.pid}`);
    proc();
  }
}