title: NodeJs Environment variables vs config file
body: <p>Actually I have a nodejs express app with its config file for params like host, port, JWT token, DB params and more. </p>
  
  <p>The question is if it could have sense to keep those params directly on environment variables (whitout any config file) and acces them without the need of do the "require" for config in all components and modules.</p>
  
  <p>All examples I see uses a config file, probably something about security or memory?</p>