title: How to create server-side application logic on Racer / DerbyJS?
body: <p>I'm learning the ins and outs of the new <a href="http://derbyjs.com" rel="nofollow">DerbyJS</a> stack, and I can't find a way to put application logic server-side. The stated intent is that all code should be able to run both in the server, and in the client. However, I need certain data to be kept hidden, and only sent to the client if authenticated based on user session info. How can I accomplish this using a <a href="https://github.com/codeparty/racer" rel="nofollow">Racer</a> store?</p>