title: mongoose poolsize best practice
body: <p>Forgive me if there's already been an answer to this somewhere, but I haven't seen anything definitive in the docs.</p>
  
  <p>Is there a limit to the size of the connection pool?
  I have a situation where there could be 100s or 1000s of connections open at once - should the connection pool be used for this or would that be an abuse of the feature?</p>