title: browser caching static files in flask?
body: <p>Have been reading flask docs in python and building a local website.</p>
  
  <p>Just performed a speed test on my website deployed on openshift with this tool <a href="http://developers.google.com/speed/pagespeed/insights/" rel="noreferrer">here</a>:-</p>
  
  <p>The analysis report says that my site is not caching static resources.
  After googling this for all my worth I gather that:-</p>
  
  <ul>
  <li>It has something to do with headers.</li>
  <li>Cache copies are kept in the client machine and also servers between the client and website.</li>
  </ul>
  
  <p><strong>My Question</strong></p>
  
  <ul>
  <li><p>Am I to include expire and tags in the html  section? Or in the HTTP header section?</p></li>
  <li><p>If in the HTTP header section how do I do this?</p></li>
  </ul>
  
  <p>If I have missed something in the docs please let me know.</p>