Rust WebAssembly at Edge - Cloudflare WAF

Cloudflare released an article Making the WAF 40% faster about optimization of their Web Application Firewall (WAF), focusing on the transition from PCRE to RE2.

The last section, "Next Steps" says:

... we are currently porting it to use the same engine powering Firewall Rules. It is based on our open-sourced wirefilter execution engine ...

This means that customers may soon be able to write Rust to run at Cloudflare's edge that can use both HTTP request filtering and Wireshark-like filtering. The Wireshark part is in Cloudflares github:

Pretty exciting to see more Rust at the edge!


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