Running multiple Node (Express) apps on same port

Question

I have multiple Node applications (build on Express framework).

Now I have placed them like this -

• /var/www/app1
• /var/www/a

Answer 1

You can create one main app(say app) parallel to you apps, and have it initializing the secondary apps (in your case app1, app2, app3) using

app.use('', require('./app1/yourApp.js')

All your apps (app1, app2, app3) need to create app and export it by using

var app = module.exports = express();

You need not create instance of server or call app.listen in all the subapps; all the sub-apps can be served via main app listen port.