server.js

'use strict';

const cluster = require('cluster'),
  express = require('express'),
  http = require("http"),
  os = require("os"),
  colors = require("colors");


var app = express();
console.log(colors.red("*********Node version******"), colors.red(process.version));

require('./config/express')(app);

const config = require('./config/config'),
  port = parseInt(process.env.PORT, 10),
  numCPUs = require('os').cpus().length;

if (cluster.isMaster &&
  (process.env.NODE_ENV === "production" ||
    process.env.NODE_ENV === "staging")) {
  // Fork workers.
  for (var i = 0; i < numCPUs; i++) {
    cluster.fork();
  }

  cluster.on('exit', function(worker, code, signal) {
    console.log('worker ' + worker.process.pid + ' died');
  });
} else {
  // Workers can share any TCP connection
  // In this case its a HTTP server

  http.createServer(app).listen(port, function() {
    console.info('Express app started on port ' + colors.red(port));
  });
}

exports = module.exports = app;