The value proposition of the new Percona Server 5.6—an open-source
drop-in replacement for MySQL—says Percona, is that it includes much
of the same functionality of MySQL 5.6 Enterprise Edition yet comes as a
free download. The new 5.6 release, adds Percona, offers all the
improvements found in MySQL 5.6 Community Edition plus scalability,
availability, backup and security features found only in MySQL 5.6
Enterprise Edition, which requires an Oracle support contract to access.
Superior diagnostics and improved integration with other Percona software
also are included—for example, Percona Server 5.6 can be migrated to Percona
XtraDB Cluster to create a high-availability MySQL cluster. Percona notes
that by removing many resource contentions that slow MySQL 5.6 Community
Edition, Percona Server 5.6 delivers better performance at more than 150
concurrent threads and up to 4x better performance at 1,000 or more
concurrent threads. Percona's stated open "secret" to remaining more
advanced and current than the latest release of MySQL, yet being
drop-in-compatible, is its penchant for pushing out bug fixes and performance
enhancements faster than Oracle.
http://www.percona.com