在AIX 6.1中，vmm替换缺省值已经更改为利用高达90%的实际内存进行文件缓存，这样更有利于计算性页面，而不是文件页面。
In AIX 6.1, the VMM replacement default is changed to utilize up to 90 percent of its real memory for file caching, favoring computational pages over file pages.
这些服务器也作为DB 2页的快速缓存，它们使用RDMA技术替换原本需要物理磁盘操作的位置以提高性能。
The servers also act as a fast cache for DB2 pages, leveraging RDMA technology to provide increased performance in situations where a physical disk operation might otherwise have been required.
通知可用于无效的缓存对象，或者在对象被添加、替换以及移除时指定事件处理器。
Notifications can be used to invalidate cached objects or to specify event handlers when objects are added to, replaced, or removed from the cache. Performance improvements.
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