Starting several workers running ParseServer on the same machine

index.js

var throng = require('throng');

var WORKERS = process.env.WEB_CONCURRENCY || 1;

throng({
  workers: WORKERS,
  lifetime: Infinity,
  start: start
});

function start() {
  var app = express();

  // Serve static assets from the /public folder
  app.use('/public', express.static(path.join(__dirname, '/public')));

  // Serve the Parse API on the /parse URL prefix
  var mountPath = process.env.PARSE_MOUNT || '/parse';
  app.use(mountPath, api);

  var httpServer = require('http').createServer(app);
  var server = httpServer.listen(process.env.PORT || 1337, function() {
    console.log('ParseServer running on port %s', server.address().port);
  });
}