title: Very Large Extjs App:Too Slow To Load
body: <p>I am creating an Extjs App by Sencha CMD for which Production  App.js size comes around 20 MB.
   Because of that, it is too slow for first time Load(Around 6-7 s Locally and 30-40s on Cloud).</p>
  
  <ol>
  <li>In there any way I can hanlde this so that my App.js size Comes down?</li>
  <li>Can I divide my app into Modules so that I can load only necessary files on first load and load other files on demand? </li>
  </ol>