Percona Server 5.6.21-69.0 发布，该版本基于 MySQL 5.6.21，主要改进包括：
新特性:
Response Time Distribution feature has been from Percona Server 5.5 as a plugin.
TokuDB 存储引擎升级到 7.5.1.
Bugs 修复:
Backup Locks did not guarantee consistent SHOW SLAVE STATUS information with binary log disabled. Bug fixed #1358836.
Audit Log Plugin would rotate the audit log in middle of an audit message. Bug fixed #1363370.
When the binary log is enabled on a replication slave, SHOW SLAVE STATUS performed under an active BINLOG lock could lead to a deadlock. Bug fixed #1372806.
Fixed a memory leak in Metrics for scalability measurement. Bug fixed #1334570.
Fixed a memory leak if secure-file-priv option was used with no argument. Bug fixed #1334719.
LOCK TABLES FOR BACKUP is now incompatible with LOCK TABLES, FLUSH TABLES WITH READ LOCK, and FLUSH TABLES FOR EXPORT in the same connection. Bug fixed #1360064.
Other bugs fixed: #1361568.
软件详情：http://www.percona.com/software/percona-server
下载地址：http://www.percona.com/downloads/
来自:开源中国社区
