Browsers (and proxies) use a cache to reduce the number and size of HTTP requests, making web pages load faster.

浏览器(和代理)请使用一个缓存可以更快地减少数，以及制作网页负荷的HTTP请求的大小。

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It specifies the interval at which the container attempts to remove unused items from the cache in order to reduce the total number of items in the cache to the value of the cache size.

它指定容器每隔多长时间尝试将不使用的项从缓存中删除以将总项数减少到缓存大小。

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