Lock Contention's Hidden Cost: How moteDB Achieved a 1000x Breakthrough

A single misconfigured RwLock can silently cripple database performance at scale—moteDB's case demonstrates why architectural choices matter more than micro-optimizations. By splitting index operations into a fast in-memory buffer and background B-Tree drain, the team eliminated lock contention without sacrificing consistency, offering a template for building databases where readers and writers don't starve each other.