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.