The MongoDB team is very excited to announce the release of MongoDB 1.4.0. This is the culmination of 3 months of work in the 1.3 branch and has a large number of very important changes.
Many users have been running 1.3 in production, so this release is already very thoroghly vetted both by our regressions systems and by real users.
Some highlights:
Core server enhancements
- concurrency improvements
- indexing memory improvements
- background index creation
- better detection of regular expressions so the index can be used in more cases
- performance numbers
Replication & Sharding
- better handling for restarting slaves offline for a while
- fast new slaves from snapshots
- configurable slave delay
- replication handles clock skew on master
- $inc replication fixes
- sharding alpha 3 - notably 2 phase commit on config servers
Deployment & production
- configure “slow” for profiling
- ability to do fsync + lock for backing up raw files
- option for separate directory per db
- http://localhost:28017/_status to get serverStatus via http
- REST interface is off by default for security (–rest to enable)
- can rotate logs with a db command, logRotate
- enhancements to serverStatus - counters/replication lag
- new mongostat tool and db.serverStatus() enhancements
Query language improvements
- $all with regex
- $not
- partial matching of array elements $elemMatch
- $ operator for updating arrays
- $addToSet
- $unset
- $pull supports object matching
- $set with array indices
Geo
- 2d geospatial search
- geo $center and $box searches
Downloads: www.mongodb.org/display/DOCS/Downloads
Full Change Log: jira
Release Notes: http://www.mongodb.org/display/DOCS/1.4+Release+Notes
Thanks for all your continued support, and we hope MongoDB 1.4 works great for you.
As always, please let us know of any issues,
-Eliot and the MongoDB Team