https://answer.freetools.me/tags/cdn/ Recent content in CDN on Answer Hugo -- 0.152.2 zh-cn Wed, 11 Mar 2026 08:38:16 +0800 https://answer.freetools.me/http/2%E6%B5%81%E4%BC%98%E5%85%88%E7%BA%A7%E4%B8%BA%E4%BD%95%E6%88%90%E4%B8%BA%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96%E7%9A%84%E9%9A%90%E5%BD%A2%E6%88%98%E5%9C%BA%E4%BB%8E%E4%BE%9D%E8%B5%96%E6%A0%91%E5%88%B0%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%BC%93%E5%86%B2%E5%8C%BA%E7%9A%84%E5%AE%8C%E6%95%B4%E6%8A%80%E6%9C%AF%E8%A7%A3%E6%9E%90/ Wed, 11 Mar 2026 08:38:16 +0800 https://answer.freetools.me/http/2%E6%B5%81%E4%BC%98%E5%85%88%E7%BA%A7%E4%B8%BA%E4%BD%95%E6%88%90%E4%B8%BA%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96%E7%9A%84%E9%9A%90%E5%BD%A2%E6%88%98%E5%9C%BA%E4%BB%8E%E4%BE%9D%E8%B5%96%E6%A0%91%E5%88%B0%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%BC%93%E5%86%B2%E5%8C%BA%E7%9A%84%E5%AE%8C%E6%95%B4%E6%8A%80%E6%9C%AF%E8%A7%A3%E6%9E%90/ 深入解析HTTP/2流优先级机制的设计原理、浏览器实现差异、服务器支持现状以及HTTP/3的演进方向。基于RFC规范、学术论文和Cloudflare实测数据，揭示为什么这个被设计为优化网页加载的特性，却成为了性能优化的隐形战场。 https://answer.freetools.me/expires%E5%B7%B2%E6%AD%BBcache-control%E6%B0%B8%E7%94%9Fhttp%E7%BC%93%E5%AD%98%E5%A4%B4%E9%83%A8%E7%9A%84%E4%BA%8C%E5%8D%81%E5%B9%B4%E6%BC%94%E8%BF%9B%E5%8F%B2/ Fri, 06 Mar 2026 21:21:14 +0800 https://answer.freetools.me/expires%E5%B7%B2%E6%AD%BBcache-control%E6%B0%B8%E7%94%9Fhttp%E7%BC%93%E5%AD%98%E5%A4%B4%E9%83%A8%E7%9A%84%E4%BA%8C%E5%8D%81%E5%B9%B4%E6%BC%94%E8%BF%9B%E5%8F%B2/ 深入剖析HTTP缓存机制从Expires到Cache-Control的演进历程。从时钟同步问题到max-age的相对时间设计,从no-cache的命名陷阱到immutable指令的最佳实践,系统梳理浏览器、CDN、代理服务器如何协同处理缓存头部。基于RFC 2616、RFC 7234、RFC 5861等官方规范和真实生产事故案例,揭示Vary头部爆炸、缓存投毒、Web Cache Deception等安全风险,以及stale-while-revalidate、stale-if-error等现代扩展的实际应用。