server.js

require('./init');
const cluster = require('cluster');
const os = require('os');

const configs = require("./config/app.config");

const PORT = configs.PORT;

const makeApplication = require('./app');
const server = makeApplication();

server.listen(PORT, () => {
  console.log(`ProcessId: ${process.pid}. Running on http://0.0.0.0:${PORT}/`);
});

// TODO: scale express + socket.io using redis
// if (cluster.isMaster && configs.APP_MODE === "production" && false) {
//   console.log(`Running on: http://localhost:${PORT}`);

//   for (let cpu of os.cpus()) {
//     cluster.fork();
//   }

//   cluster.on('exit', (worker, code, signal) => {
//     console.log(`Worker ${worker.process.pid} died (${signal}. Restarting...)`);
//     cluster.fork();
//   });
// } else {
//   server.listen(PORT, () => {
//     console.log(`Worker ${process.pid} is running...`);
//   });
// }