NEventStore/NEventStore.Persistence.MongoDB — pull request #13 by AGiorgetti (2014-06-19 08:59:33+00:00)
Title: Reverted to the CheckpointNumber for sorting in the GetFrom query, added...

... the CheckpointNumber to the compound index that Mongo should use. This avoids the scanAndSort problem in query.
All the other queries that use same sorting scheme should benefit from this change too.