These elements are stored in the browser's file system cache so that the browser needs to download them over the network only once.

这些元素存储在浏览器的文件系统缓存中，因此，浏览器只需要通过网络下载一次这些元素即可。

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Now, for normal database operation you do not really have to worry about the file system cache because DB2 implements buffer pools that do the necessary caching already.

现在，对于一般的数据库操作，不必考虑文件系统缓存，因为DB 2实现了缓冲池，这些缓冲池已经做了必要的缓存。

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In a well-tuned site, this disk offload file fits entirely into the file system cache, and is served out of RAM.

在一个优化的网站上，这个磁盘卸载文件会完全存储在文件系统缓存中，它位于RAM之外。

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