Item: MongoDB
Rating: 6
Author: Fareed Abolhassani

Overall Satisfaction with MongoDB

Use Cases and Deployment Scope

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.

Pros and Cons

Pros

Faster, more speed
Much more efficient
Pluggable storage engine API

Cons

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).

Return on Investment

Improved speed
Schema-less
Allow us to scale out easily

MongoDB provides better performance on a big database. If you prefer to define indexes rather than a map/reduce function, MongoDB is good for you. It's quick to start it up and very easy to learn, basically no entry barrier. MongoDB's community is very welcoming.