MySQL5.6发布及其新特性
在去年MySQL用户大会的时候，Sun发布了 MySQL5.5 。今天Oracle MySQL在MySQL User Conference 2011（MySQL用户大会）又扔出了个重磅*，MySQL5.6发布。 列举下MySQL5.6部分新特性： InnoDB现在可以限制大量表打开的时候内存占用过多的问题（比如这里提到的
在去年MySQL用户大会的时候，Sun发布了MySQL5.5。今天Oracle MySQL在MySQL User Conference 2011（MySQL用户大会）又扔出了个重磅*，MySQL5.6发布。
列举下MySQL5.6部分新特性：
- InnoDB现在可以限制大量表打开的时候内存占用过多的问题（比如这里提到的）(第三方已有补丁)
- InnoDB性能加强。如分拆kernel mutex;flush操作从主线程分离;多个perge线程;大内存优化等
- InnoDB死锁信息可以记录到 error 日志，方便分析
- MySQL5.6支持延时复制，可以让slave跟master之间控制一个时间间隔，方便特殊情况下的数据恢复。
- 表分区功能增强
- MySQL行级复制功能加强，可以降低磁盘、内存、网络等资源开销（只记录能确定行记录的字段即可）
- Binlog实现 crash-safe
- 复制事件采用crc32校验，增强master/slave 复制数据一致性
新增?log_bin_basename （以前variables里面没有binlog位置信息，对数据库的监管很不方便）
更多信息见：http://dev.mysql.com/doc/refman/5.6/en/mysql-nutshell.html
Related posts:
- MySQL5.5复制/同步的新特性及改进
- MySQL 5.5 Released(非GA)
- MySQL5.5新特性
- MySQL5.5与MySQL5.1 性能(比较)对比测试
- MySQL5.4引起的一些争议
? 谭俊青 发布在 MySQL性能、MySQL Cluster集群、MySQL HA高可用等研究 - MySQL实验室, 2011.
可以任意转载, 但转载时务必以超链接形式标明文章原始出处 和 作者信息。
链接: http://www.mysqlab.net/blog/2011/04/mysql5-6-release/
标签: InnoDB, MySQL Replication, MySQL5.5, MySQL5.6
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