title: Phoenix Session Identifier
body: <p>I am creating an application that will authenticate users and forward them to a redirect URL that was passed into the first get request.  </p>
  
  <p>Flow is as so: 
  1. User clicks on a static URL not hosted within application. 
  2. Authenticate request (GET) (params = redirect URL)<br>
  3. (user submits a form) -> (Authenticate) (POST) (params = redirect URL &amp; user &amp; pass) 
  4. Auth occurs on server and either forwards them to the redirect, or dumps to an invalid login page. </p>
  
  <p>My question is so: 
  I don't want to display the login page if the user has successfully authenticated in an N timespan.  I can handle that logic with a genserver no problem. But is there a way to create a unique session storage before I hit the POST which will hang on to the user before I display the form? </p>
  
  <p>In ASP.NET the session container is already unique between users, so I am looking to see if there is something similar with phoenix. </p>
  
  <p>Thanks for your help. </p>