title: How to divide mongo documents across multiple collections?
body: <p>i've a collection that have almost 8kk records and at this point some operations (like write) are taking too long to complete, to work around this i thought in split the documents across multiple collections, for example;</p>
  
  <p>all documents that have a specific key starting between a and e, will be on a_to_e collections, documents starting between f and j will be on f_to_j collections, and so on...</p>
  
  <p>this implementation doesn't take much afford to do in code(python) but i was thinking if a resource like this is available on on mongodb somehow by "default", if yes how can i accomplise that and if no, this is a acceptable solution for this scenario?</p>