Google also promises zero data loss and instant failover for Google Apps customers.

Google也承诺为客户提供零数据丢失和即时错误转移的服务。

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Synchronous (zero data loss) - the log data is flushed to stable storage at the standby before committing on the primary.

Synchronous(同步)(零数据丢失)-主服务器进行提交之前，要先将日志数据写入备用服务器中的稳定存储器。

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