It can be done either through a CONNECT tag, in which case the custom caching applies only to the component in question, or through a URL, in which case the custom caching applies to the entire page.
定制高速缓存可以通过CONNECT标记实现，在这种情况下定制高速缓存只能用于组件请求，还可以通过一个URL实现，在这种情况下定制高速缓存可用于整个页面。
In general, you want to use caching to optimize only high volume, high frequency access of data.
总而言之，您需要使用缓存来优化数据的高容量和高访问频率。
File system caching has a significant impact only on query Q1 which retrieves all documents without any predicate evaluation.
文件系统缓存仅对查询Q1(检索全部文档，无谓词运算)有较大影响。
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