CDN（内容分发网络）
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CDN 是一个分布式服务器网络，从地理上靠近用户的位置提供网页内容。CDN 通过指向 CDN 边缘服务器（而非源站）的 [[cname-record|CNAME 记录]] 或 [[a-record|A 记录]] 进行配置。
示例
Cloudflare CDN caches your website across 300+ cities. A CNAME record pointing your domain to Cloudflare's network enables the CDN.