Starting with this release, we introduce a new release model for Percona Server. From now on, we will have both Stable and Release Candidate releases. Release Candidates will introduce new features not yet available in Stable releases.
Along with new features, our new 5.1.49-12.0 RC contains a couple of patches from the Facebook-MySQL tree - https://launchpad.net/mysqlatfacebook . Of particular note is better integration with FlashCache.
We also introduce the very interesting new feature called ”Permanent InnoDB Buffer Pool” (sponsored by a Well Known Social Network site). It allows you to keep the InnoDB buffer pool in memory between restarts of MySQL servers.
This can result in a significant decrease in warmup time after MySQL restarts.
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