* mypgrep.py - a tool, similar to pgrep, for managing mysql connections这份介绍似乎已经不能完全概括 Google Mysql Tools 了。现在的重点似乎是补丁包部分。根据版本号分为 MySQL4 与 MySQL 5,MySQL 5 的 Patch 现在很少,而 MySQL 4 部分内容真的比较丰富,关键改进列表:
* compact_innodb.py - compacts innodb datafiles
by dumping and reloading all tables
* patches - patches to add features to MySQL 4.0.26 and MySQL 5.0.37
* SemiSyncReplication - block commit on a master until at least one slave acknowledges receipt of all replication events.MySQL 在联机备份方面是弱势,倒是期待 Google 也能在这个方面做出改进(我非常好奇对于 Google Checkout 数据库是如何备份的).
* MirroredBinlogs - maintain a copy of the master's binlog on a slave
* TransactionalReplication - make InnoDB and slave replication state consistent during crash recovery
* UserTableMonitoring - monitor and report database activity per account and table
* InnodbAsyncIo - support multiple background IO threads for InnoDB InnoDB 异步IO的支持相信对性能会有很明显的提升
* FastMasterPromotion - promote a slave to a master without restart
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