镜像服务器到底有啥用?一文看懂数据备份与提速秘诀,揭秘镜像服务器,数据备份与加速的秘密
What exactly is the use of a mirror server? Understand the secrets of data backup and acceleration in one article, revealing the secrets of mirror servers, data backup and acceleration
以上为机器翻译结果，长、整句建议使用 人工翻译 。