Sample of NodeJS as a cluster + Express + Hogan

app.js

/*
 *  Cluster NodeJS + Express + Hogan
 *
 *  "dependencies": {
 *    "express": "~4.13.3",
 *    "hogan-middleware": "*"
 *  }
 */

var cluster = require('cluster');

if (cluster.isMaster) {

    var cpuCount = require('os').cpus().length;

    for (var i = 0; i < cpuCount; i += 1) {
        cluster.fork();
    }

} else {

    var express = require('express');
    var app = express();

    app.set('view engine', 'mustache');
    app.engine('mustache', require('hogan-middleware').__express);

    app.get('/', function (req, res) {
      res.render('index',{msg:'Hello world!'})
    });

    app.listen(3000)
}