const cluster = require("cluster"); const numCPUs = require("os").cpus().length; if (cluster.isMaster) { // Fork workers. for (let i = 0; i < numCPUs; i++) { cluster.fork(); } console.log("Master starting " + new Date().toISOString()); cluster.on("exit", () => { process.exit(1); }); } else { // worker task require("./create-server"); }