Using Node.js domains in production

domain-middleware.js

app.use(function(req,res,next){
  
    const d = Domain.create(); // create a new domain for this request
    
    res.once('finish', function () {
      d.exit();
      d.removeAllListeners();
    });
    
    d.once('error', function (e) {
      if (!res.headersSent) {
        res.status(500).json({
          error: e && e.stack || util.inspect(e || 'no error trace available')
        });
      }
    });
    
    // we invoke the next middleware
    d.run(next);
  
});