Today we released MariaDB 5.5.23 as stable (GA). The last few days we have also released MariaDB 5.3.6 stable (second GA release) and MariaDB 5.2.12 and MariaDB 5.1.62.
The reason for doing the older releases was that we found a very serious security issue in all recent MariaDB / MySQL releases and we strongly recommend everyone to upgrade to one of the above releases ASAP. We have informed Oracle of the problem and they are likely to issue a new MySQL release soon!
That said, I am very happy that MariaDB 5.5 is finally available as a stable release and I wish you the best of luck with it!
MariaDB 5.5 includes all features from MySQL 5.5 and MariaDB 5.3 (with the exception of OQGraph for which we are awaiting a patch from the OQgraph developers to solve a compatibility issue).
* Better optimizer (Faster complex queries and sub queries)
* Efficient thread pool
* Pluggabale authentication with PAM plugin
* Non-blocking client API Library
* More storage engines
* Microsecond precission
* Table elimination
* Virtual columns
* Extended user statstics
* MyISAM segmented key cache
* Group commit (Makes replication significantly faster!)
* Progress reporting for ALTER TABLE and LOAD DATA INFILE.
* Dynamic columns (a nosql feature)
* Spatial GIS extensions
* A lot of speed improvements like faster heap tables, character conversions etc.
For a full list, please see our Knowledgebase which has lists of features for each release.
If you want to know more about all the new features in MariaDB, you can find many of the MariaDB core developers, including me, at the MariaDB.org booth at the Percona Live conference in Santa Clara during Thursday or at the SkySQL / MariaDB conference on Friday.
We will also have a MariaDB BOF on Wednesday at 21.00 in Ballroom A.
Hope to see many of you there!