Cloudflare's battle-tested QUIC/HTTP3 implementation in Rust that powers their global edge network - the same code serving millions of requests per second

When Cloudflare needed to implement HTTP/3 across their massive global network, they built quiche from scratch in Rust. This isn’t just another protocol implementation - it’s the actual code handling millions of production requests every second. While other QUIC libraries exist, few have been stress-tested at Cloudflare’s scale (handling ~20% of all web traffic globally). The library’s design philosophy is refreshingly honest: it provides low-level packet processing and connection state management, but expects you to handle your own I/O and event loops. No magic, no hidden complexity.

What sets quiche apart is its production pedigree and growing ecosystem adoption. Android’s DNS resolver uses it for DNS-over-HTTP/3, curl integrates it for HTTP/3 support, and the API design reflects real-world lessons learned from operating at internet scale. The Rust implementation offers memory safety without garbage collection overhead - crucial for high-performance network code. With 11k+ stars and active development, it’s becoming the de facto standard for QUIC in Rust, especially if you need something that’s proven to work when the internet is watching.

⭐ Stars: 11292
💻 Language: Rust
🔗 Repository: cloudflare/quiche