这就允许在其中缓存请求，减少访问物理设备的次数，加快访问速度。
This allows the requests to be cached there for faster access (rather than going back out to the physical device).
这是一个复杂的系统，数据被复制到多个中间设备，通常是为了在数百万人同时试图访问服务时加快文件访问速度。
It's a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service at the same time.
在保持能够灵活地处理您所控制的类的同时，由于这是直接访问数据，还使速度加快了。
This gives the speed of direct access to data while keeping the flexibility of working with classes that you control.
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