title: How to check if Query Cache is enabled in ArangoDB(3.1.23)
body: <p>I have made configuration for query cache for Arango as follows
  :</p>
  
  <p><code>{
      "mode": "demand",
      "maxResults": 2000
  }</code></p>
  
  <p><strong>But we don't see any performance improvement despite of adding the above configuration.</strong>
  For fetching 40 documents the API takes around 265 ms for one concurrent thread.
  In my query I have added an extra parameter of <strong>"cache":true</strong> and <strong>"batchSize":40</strong>.</p>
  
  <p>How do we verify that the response is coming from cache and not from document.?</p>
  
  <p>We have also enabled the logging of Arango to debug but not able to see any result from cache</p>
  
  <p>Kindly help me with that.</p>