Comparing HTTP/3 vs. HTTP/2 Performance

What this post added

This post details Cloudflare's support for HTTP/3, the successor to HTTP/2, highlighting its performance benefits such as reduced head-of-line blocking and faster session startup (0-RTT). It presents performance comparisons between HTTP/3 and HTTP/2, showing initial advantages for HTTP/3 in session startup and smaller transfers, while noting that HTTP/2 with BBR v1 can outperform HTTP/3 on larger transfers due to differences in congestion control algorithms (CUBIC for HTTP/3 vs. BBR v1 for HTTP/2). The post also discusses ongoing efforts to tune congestion control for HTTP/3 and leverage its capabilities for further performance gains.