MongoDB
Today 10Gen, the creators of MongoDB, announced in a blog post that MongoDB 1.4 is production ready.
Some of the new features and enhancements include:
Core server enhancements
- indexing memory improvements
- background index creation
- better detection of regular expressions so the index can be used in more cases
Replication and Sharding
- better handling for restarting slaves offline for a while
- fast new slaves from snapshot
- $inc replication fixes
- 2 phase commit on config servers
Deployment and production
- ability to do fsync + lock for backing up raw files
- option for separate directory per database
- REST interface is off by default
- rotate logs with the db command logRotate
- new mongostat tool and db.serverStatus enhancements
Query language improvements
- $all with regex
- $not
- partial matching for array elements $elemMatch
- $ operator for updating arrays
- $addToSet
- $unset
- $pull supports matching objects
- $set with array indices
Geo
- 2d geospatial search
- geo $center and $box searches
For more information, read the full release notes here.
