这种架构使“旁观者”与数据库服务器分离，以便它们能够在不使问题加重的情况下查看状态。
This architecture keeps the "spectators" away from the database server so they can see the status without adding to an existing problem.
服务器在崩溃后再次启动时，XFS代码会查看日志，了解情况，把那些不完整的数据块填上二进制零以预防安全性问题。
When the server started up again after the crash, the XFS code would look at the journal, realize the situation, and fill those incomplete data blocks with binary zeros as a security precaution.
查看应用程序服务器本身的不同资源以及它们与应用程序的其余部分有关的表现情况的能力是很宝贵的。
The ability to view the separate resources of the application server itself, and how they are performing in relation to the rest of the application, is invaluable.
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