由于反向代理是主要的接触点，因此可以执行ssl负载分散等工作；ssl负载分散要求服务器为客户机希望连接到的主机名对应的服务器。
Since it is the primary point of contact, the reverse proxy can perform such operations as SSL offload, which requires that the server be the hostname to which the client is expecting to connect.
可以使用从属服务器来帮助分散负载，并在发生故障时提供恢复能力。
You can use the slave servers to help spread the load and provide resilience in the event of a failure.
因此，很容易下载文件，减少Web服务器的负载，而不是在用户查看整个博客帖子页面时提供通常很分散的所有信息。
Thus, you can easily download the files and reduce the load on the Web servers rather than supply all of the information normally distributed when the user views a full page of blog posts.
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