Overall Satisfaction with MongoDB
MongDB is used as a JSON document database for our organization and it's currently being implemented as we speak and it mainly addressed our speed problem.
- Faster, more speed
- Much more efficient
- Pluggable storage engine API
- Keep in mind if you're updating a user's social data that means going through all of the activity streams, which is error prone.
- No backing of store behind cache means inconsistent data.
- Not flexible with querying (i.e no JOIN).
Not much to say but MongoDB is a somewhat efficient database than other databases I've seen.