The maintenance thread looks at each connection in the pool, checks how long it has been in the pool, and how much time has elapsed since it was created and last used.

维护线程在池中查看每个连接，检查连接在池中存放的时间以及连接自创建和最后一次使用以来已经过多长时间。

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You can also view other statistics, such as the number of hits to your application, how much bandwidth has been used, etc. Figure 13 shows an example.

您还可以查看其他统计数据，比如应用程序的点击数和所使用的带宽等。图13给出了一个示例。

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The verbose GC output can be used to assess how stable the workload is and how much risk there is that the JVM will require more memory than has been allowed.

可以使用详细GC输出来评估工作负载的稳定性以及JVM需要高于允许内存的风险。

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