title: Using a NoSQL system to store session data
body: <p>I'm trying to design a stateless and scalable web system. For the 'session' concept, I'm considering using Redis as the warehouse of sessions.  </p>
  
  <p>But do you think using a NoSQL system is suitable for that purpose?  Is it an overkill? Should I consider another NoSQL system <em>(I'm not looking for a shopping list of course. I mean another NoSQL that is more suitable to store session data than Redis)</em>?</p>