Lightning Talk: Dynamic Modules: A New Era of High-Performance Envoy Extensions
summary
Runtime-loadable shared library extensions implement a 205-line Envoy C API and benchmarks in production show dynamic modules perform almost identically to native C++ extensions while avoiding rebuilding Envoy. They allow zero-copy access to request memory, ship multiple HTTP filters per module, and currently provide an official Rust XDK. Limitations today: no network filters, APIs are incomplete, and modules target specific Envoy versions; ABI stability and multi-language support are planned before broader adoption.
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