Forever and Upstart modules for Node.js

In the advanced stages of your application development (usually leading to deployment into production environment), you might want to use the forever (https://npmjs.org/package/forever) module and 

There are two ways to use forever: through the command line or by using forever in your code. Note: If you are using forever programatically you should install forever-monitor.

forever start app.js

Installation

  $ [sudo] npm install forever -g

 $ cd /path/to/your/project

  $ [sudo] npm install forever-monitor