title: What does Cache-Control mean when a client uses it?
body: <p>I thought I understood what the Http Header "Cache-Control: max-age=3600" meant but then I came across it in a client request as this:</p>
  
  <pre><code>Cache-Control: max-age=0
  </code></pre>
  
  <p>I'm not entirely sure what this means from a client's perspective.</p>
  
  <p>Any insight would be great.</p>
  
  <p>Thanks</p>