通过将暂挂的写操作放到高速缓存中，硬盘固件就可以重新为它们排序，并为它们分组，以便用尽可能最快的方式将它们写到磁盘中。

By putting pending writes into a cache, the hard drive firmware can then reorder and group them so that they're written to disk in the fastest possible way.

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缓存实例还可以用于对相关的对象进行逻辑分组。

Cache instances are also used to logically group related objects.

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而且缓存也自然显现出“分组”的功能，从而可以使用户以最佳方式组织缓存中的条目，并保持相关的东西能够聚在一起。

The cache can also have an innate "grouping" concept so that you can optimally organize the entries in the cache and keep related things together.

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