title: How to clear browser cache after user logout to prevent access to private info via 'Back' button
body: <p>After a user logs out, if they hit the back button, they can go back to the last page they were on before logging out. </p>
  
  <p>The app I am working on will often be used on a public computer (library or computer lab, for example) and I'd like to prevent users from being able to see anything from previous user sessions.</p>
  
  <p>I'm on Rails 3 and Devise, btw, although it seems that this issue would come up with any framework or login mechanism. </p>
  
  <p>Is the solution to use headers/meta-tags to disable browser-caching? Anybody know of a gem or tutorial that addresses this issue?</p>
  
  <p>Look forward to your advice.</p>