title: Compare a mongo diff on two collections
body: <p>I have two mongo collections, one which refers to the production env and the other to the testing env.</p>
  
  <p>How can I compare a diff between my two collections?</p>
  
  <p>I tried dumping them to a bson and then converting to a json. But I cant just perform a simple diff on them since the sorting might vary and the json file is way too large to be sorted.</p>