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Cloudflare 推出 Origin Range Requests,R2 大文件 p99 延迟减半

Origin Range Requests: Serving large files without range-request tuning

精选理由

Cloudflare 用 Pingora 重构了缓存,现在 R2 上拉大文件的 range request 会自动协调,p99 延迟直接砍半,做下载站的朋友看看。

Cloudflare 在博客中介绍新功能 Origin Range Requests,针对朴素字节范围缓存会浪费大量源站带宽的问题,用 Pingora 重构了缓存架构,自动协调部分内容拉取。该功能使 R2 的 p99 延迟降低一半。文章说明了在大文件场景下无需再手动调优 range request 配置。

原文 · Cloudflare Blog

Origin Range Requests: Serving large files without range-request tuning

Naive byte-range caching can waste gigabytes of origin bandwidth on small requests. We rebuilt our cache architecture in Pingora to coordinate partial fetches automatically, cutting R2 p99 latency in half.