const throng = require('throng') const createServer = require('./server/createServer') const port = parseInt(process.env.PORT, 10) || 5000 throng({ workers: process.env.WEB_CONCURRENCY || 1, lifetime: Infinity, start: function (id) { const server = createServer() server.listen(port, function () { console.log('Server #%s listening on port %s, Ctrl+C to stop', id, port) }) } })