The Database Bottleneck You Never Saw Coming: Why 50ms Will Make or Break Your AI Agent in 2026

The uncomfortable truth about AI infrastructure that nobody is talking about — and why your stack might be optimizing for the wrong metric In February 2026, a machine learning engineer at a well-funded fintech startup discovered something that kept her awake at night. Her AI-powered ad recommendation system was technically “working.” The vector database was returning results. The embedding model was generating similarities. The API was responding with HTTP 200 codes. But the advertisers were see