I wrote about how Wikipedia's HTTP/2 and SPDY deployed to its CDN and the regressions, benefits, and lessons we learned around paint time and load time metrics.

It took place back in 2016, but the topic came up recently and the caveats esp at scale are still somewhat unknown. Enjoy!

https://techblog.wikimedia.org/2022/11/04/http-2-performance-revisited/

#webperf #http2 #spdy #http3 #cdn #NetOps