Object caching and pooling: the application server automatically pools stateless session beans at the server level, reducing the amount of time spent in object creation and garbage collection.

对象高速缓存和合用：应用程序服务器自动在服务器级合用无状态会话bean，这减少了花在对象创建和垃圾收集上的时间。

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These levels of data collection (application and database tiers) are not complete without the ability to collect server-side resource level monitoring where the application components are running.

数据收集的这些级别(应用程序和数据库等级)在不具备收集服务器端资源级别监控(应用程序的各个组件正是运行于此)的情况下是无法完成的。

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Default groups exist at the server level, the collection level, and the project level.

预设群组存在于伺服器层级、集合层级和专案层级。

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