We’ve replaced the original core system in Cloudflare with a new modular Rust-based proxy, replacing NGINX. It’s not only substantially faster for all our customers, it’s also more secure, and lets us ship new products quicker than ever before.

Cloudflare's platform is a leading provider of internet security and performance solutions, offering insights into web security, content delivery, and DNS management. Through documentation, blog posts, and webinars, Cloudflare provides insights into protecting websites and applications from cyber threats and improving performance. Developers and IT professionals can learn about CDN (Content Delivery Network), DDoS mitigation, and firewall configurations to secure and accelerate web traffic.

Cloudflare

Cloudflare has replaced their core NGINX-based proxy system (FL1) with a new Rust-based modular proxy (FL2) built on their Oxy framework. The migration delivers a 25% performance boost with 10ms faster median response times, uses less than half the CPU and memory, and provides better security through Rust's memory safety guarantees. The new modular architecture allows faster product development, graceful restarts without dropping connections, and eliminates the incremental performance cost of adding new features that plagued the legacy system.

Cloudflare just got faster and more secure, powered by Rust

Smooth restarts - keeping the Internet flowing

How do we measure if we are getting better?

<p>Rust’s reliability and performance are shining again! Cloudflare adopting it for such a critical system really validates Rust’s growing dominance in modern infrastructure.</p>
