Extending Envoy With WebAssembly

on YouTube ↗05m

" summary

Envoy gains small WebAssembly modules that run as HTTP filters using the Proxy-WASM ABI, built with the Proxy-WASM SDK and authored in Rust and Go. Real production examples include a module that uses Envoy HTTP callouts to fetch access tokens from Google Cloud metadata server and rewrite headers for upstream services; the module is open-sourced on GitHub and runs in NUMO’s production workloads. Google Cloud Load Balancers now accept proxy-wasm–compliant modules too.

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