MySQL Patches — google-mysql-tools

Google 以 GPL 釋出 MySQL 資料庫工具 — google-mysql-tools。這個工具適合 MySQL 4.0.26，而 Google 預期很快會推出 MySQL 5 的版本。主要功能包括：

* SemiSyncReplication – block commit on a master until at least one slave acknowledges receipt of all replication events.
* 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
* FastMasterPromotion – promote a slave to a master without restart