Each instance has to initialize its own cache, but it only caches the references it USES, and is able to access the reference directly rather than having to look it up in a hash map.

每个实例必须初始化其自身的缓存，但它只缓存那些它要使用的引用，并且可以直接访问引用而不是要到一个散列映射中去寻找。

youdao

Examples of files you should put in the Caches directory include database cache files and downloadable content, such as that used by magazine, newspaper, and map applications.

举个例子，比如杂志、新闻、地图应用使用的数据库缓存文件和可下载内容应该保存到这个文件夹。

youdao