title: Cache-control max-age meta tag not registering
body: <p>I've put this in my head section. It appears in the page source in the browser.</p>
  
  <pre><code>&lt;meta http-equiv="Cache-Control" content="max-age=1209600"&gt;
  </code></pre>
  
  <p>However, when I look in the Chrome extension <code>Live HTTP Headers</code>, it says the following.</p>
  
  <pre><code>Cache-Control: max-age=0
  Content-Encoding: gzip
  Content-Length: 5849
  Content-Type: text/html; charset=utf-8
  Date: Sat, 05 Apr 2014 04:29:16 GMT
  Expires: Sat, 05 Apr 2014 04:29:16 GMT
  Last-Modified: Sat, 05 Apr 2014 03:33:19 GMT
  </code></pre>
  
  <p>The <code>max-age</code> isn't registering. I've emptied the browser cache but it makes no difference.</p>
  
  <p>Any explanations? <a href="https://bookacasual.com.au" rel="noreferrer">This</a> is the site, incidentally.</p>
  
  <p>UPDATES: </p>
  
  <p>Firebug similarly records <code>Cache-Control: max-age=0</code>.</p>
  
  <p>Google also makes clear <a href="https://developers.google.com/speed/articles/caching" rel="noreferrer">here</a> that <code>max-age</code> overrides the <code>Expires</code> header (which I don't set) and that you don't need both.</p>