Of course. But no one sane would put &#x27;Cache-Control: immutable&#x27; on `index.html`. It&#x27;s to be used on `&#x2F;js&#x2F;lib&#x2F;jquery-1.7.1.min.js` or `&#x2F;js&#x2F;mystuff-&lt;sha1here&gt;.js` or `&#x2F;photos&#x2F;mnbvcxzasdfghjklqqwertyuio1234567890.jpg`