server.js

// modules =================================================
var express        = require('express');
var app            = express();
var mongoose       = require('mongoose');
var bodyParser     = require('body-parser');
var methodOverride = require('method-override');

var cluster = require('cluster');
var http = require('http');
var os = require('os');

var numCPUs = os.cpus().length;




// configuration ===========================================
	
// config files
var db = require('./config/db');

var port = process.env.PORT || 80; // set our port
// mongoose.connect(db.url); // connect to our mongoDB database (commented out after you enter in your own credentials)

// get all data/stuff of the body (POST) parameters
app.use(bodyParser.json()); // parse application/json 
app.use(bodyParser.json({ type: 'application/vnd.api+json' })); // parse application/vnd.api+json as json
app.use(bodyParser.urlencoded({ extended: true })); // parse application/x-www-form-urlencoded

app.use(methodOverride('X-HTTP-Method-Override')); // override with the X-HTTP-Method-Override header in the request. simulate DELETE/PUT
app.use(express.static(__dirname + '/public')); // set the static files location /public/img will be /img for users

// routes ==================================================
require('./app/routes')(app); // pass our application into our routes

// start app ===============================================
//app.listen(port);


if (cluster.isMaster) {
    for (var i = 0; i < numCPUs; i++) {
        cluster.fork();
    }

    cluster.on("exit", function(worker, code, signal) {
        cluster.fork();
    });
} else {
    var server = http.createServer(app,function(req,res){
    }).listen(port);
}

console.log("Node running at "+os.type()+" OS, with: "+numCPUs+" cores");
console.log('Magic happens on port ' + port); 			// shoutout to the user
exports = module.exports = app; 						// expose app