title: Cache Control for Dynamic Data Express.JS
body: <p>How it is possible to set up a <strong>cache-control</strong> policy in <strong>express.js</strong> on JSON response? </p>
  
  <p>My JSON response doesn't change at all, so I want to cache it aggressively. </p>
  
  <p>I found how to do caching on static files but can't find how to make it on dynamic data.</p>