向前写日志系统需要稳定存储。
进程检查点机制是在进程正常运行的适当时刻设置检查点,将进程状态保存到稳定存储器中。
Checkpoint facility enables the intermediate state of a running process to be saved to stable storage.
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。
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。
Synchronous (zero data loss) - the log data is flushed to stable storage at the standby before committing on the primary.
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