如名称所示，varnishd文件是varnish守护进程——缓存和服务来自内存的内容的永久服务。

The file varnishd, as its name implies, is the varnish daemon - a perennial service that caches and serves content from memory.

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另外，作为一个可重启和永久的服务，GVPE还容易设置和配置，同时仍然保持安全性。

In addition, GVPE is also easy to setup and configure as a restartable and permanent service, while still retaining security.

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facebook服务的永久重定向响应。

The facebook server responds with a permanent redirect.

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