title: How kubernetes HPA with 2 or more metrics behaves - especially the no.of replicas calculation?
body: <p>We have configured to use 2 metrics for HPA</p>
  
  <ol>
  <li>CPU Utilization</li>
  <li>App specific custom metrics</li>
  </ol>
  
  <p>When testing, we observed the scaling happening, but calculation of no.of replicas is not very clear. I am not able to locate any documentation on this.</p>
  
  <p><strong>Questions:</strong></p>
  
  <ol>
  <li>Can someone point to documentation or code on the calculation part?</li>
  <li>Is it a good practice to use multiple metrics for scaling?</li>
  </ol>
  
  <p>Thanks in Advance!</p>