Google released some improved MySQL code this week. Some of the changes include:
* 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
Information Week Source: http://www.informationweek.com/news/showArticle.jhtml?articleID=199201237
Google Blog info about this: http://google-code-updates.blogspot.com/2007/04/google-releases-patches-that-enhance.html
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