title: Clean up Browser Cache
body: <p>I´m programming Java App. and get an error, because browser don't connect to server to take new values, just renderize from cache...
  I make something like this:</p>
  
  <pre><code>&lt;% if(request.getAttribute("msg")!=null)
      out.println("alert("+request.getAttribute("msg")+")");
  %&gt;
  </code></pre>
  
  <p>It works fine, but when i click on a link and then click on BACK button from browser it dont call server... I tried something like: <code>response.setHeader("Pragma", "No-Cache");</code> on Java
  and <code>&lt;meta http-equiv="expires" content="no-cache"&gt;</code> on html, but nothing make it work...
  anyone have a suggest?</p>