大多数文件系统都通过缓冲区缓存来相互通信，这种缓存通过缓存最近使用的数据来优化对物理设备的访问。
Most of the file systems communicate through a buffer cache, which is a cache that optimizes access to the physical devices by caching recently touched data.
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。
In a well-tuned site, this disk offload file fits entirely into the file system cache, and is served out of RAM.
其他节省带宽的技术包括：加速页面加载的缓存技术、优化解析文本格式的XML文件的时间，以及将XML文件编译成二进制文件(不可读的)。
Other techniques to conserve bandwidths include: caching techniques to speed up page loads, optimizing time to parse text-formatted XML files, and compiling XML files as a binary file (unreadable).
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