boot.js

// Load environment variables
require('dotenv');

// Cluster Initialization

var cluster = require('cluster');

// Code to run if we're in the master process
if (cluster.isMaster) {

  // Count the machine's CPUs
  var cpuCount = require('os').cpus().length;

  // Create a worker for each CPU
  for (var i = 0; i < cpuCount; i += 1) {
    cluster.fork();
  }

  // Listen for dying workers
  cluster.on('exit', function (worker) {

    // Replace the dead worker, we're not sentimental
    console.log('Worker ' + worker.id + ' died :(');
    cluster.fork();

  });

// Code to run if we're in a worker process
} else {

  require('./newrelic');
  require('./app');
  console.log('Worker ' + cluster.worker.id + ' running!');

}

dotenv.js

  var DotEnv = require('dotenv-node');
  new DotEnv();

  var EnvBang = require('envbang-node');
  new EnvBang();