从实践的角度来看，这些日志存储在一个数据中心中(可以自动复制到第二个数据中心)。
As a practical matter, those logs are stored in one data center (possibly with automatic replication to the second).
使用从数据库日志文件或数据库触发器触发的存储并发送 (store-and-forward) 技术将操作发送给复制。
The operation is sent to replicate using store-and-forward techniques triggered from a database log file or database triggers.
为了让这一场景变得更加真实，我将一些日志文件复制到存储器中，以模拟降级状态。
To make this scenario a bit more realistic, I copied some log files into the storage to simulate a degraded state.
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