Top Answers

1. Embed operator $exists within the operator $map
   2 votes
2. Is there a way to make mongodb to use index, which may not quite fit, but lets sort results blockwise rather than all together?
   1 votes
3. How to perform addition in already existing json object in mongoDB?
   0 votes
4. mongodb backup process resume from the point of failure
   0 votes
5. -1 votes