What Broke After 10M WebSocket Events (And How We Fixed Our Realtime AI Orchestration)

Introduction We hit a hard wall when our realtime AI feature started processing millions of small events per day. Latency spiked, connection churn increased, and our monitoring looked like a horror movie. This is the story of what broke, the bad assumptions we made, how we changed architecture, and what actually worked in production. The Trigger A new feature introduced per-user AI agents that listen to user actions via WebSockets, enrich events with models, and publish back state...