通常，在应用程序中使用缓存有两个原因。
Generally, you would use caching in your application for two reasons.
这些缓存失效场景通常分为两类
These cache invalidation scenarios generally fall into two categories
在初始下载之后，客户的计算机通常会缓存文件。
After the initial download, the client machine usually caches the file.
部分读取通常等于高速缓存管理器线尺寸。
Partial read usually is equal to cache line size in cache manager.
部分读取通常等于高速缓存管理器线尺寸。
Partial read usually is equal to cache line size in cache manager.
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