由于数据库是从群集中写入的，所以它现在被卸载，通过集群成员中的缓存满足了所有读取。
The database is now offloaded as it gets writes from the cluster, all reads are satisfied using the cache in the cluster member.
如果失效服务器重新集成到ha群集中(即重新变得可用)，它将停止备用服务器上的数据库，并启动重新集成的服务器上的数据库。
If a failed server reintegrates into the ha cluster (that is, becomes available again), it will stop the database on the standby server and start it on the reintegrated server.
在典型的错误中，一个企业选择群集它们的Web服务器和应用程序服务器而不是数据库服务器。
In the classic mistake, an enterprise chooses to cluster its Web servers and application servers but not the database servers.
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