Building Azure-Grade Consensus with Rust and AI: Inside a 130K-Line Productivity Breakthrough
A developer rebuilt Azure's foundational Replicated State Library in Rust using AI coding agents, completing 100K+ lines in weeks while addressing critical performance gaps. The project reveals how AI-driven code contracts and lightweight spec development enabled unprecedented speed without sacrificing correctness. Throughput soared from 23K to 300K operations/sec, showcasing AI's potential for high-stakes systems programming.