High Performance Browser Networking Framework A systematic approach to web performance grounded in how browsers, protocols, and networks actually work. Apply these principles when building frontend applications, setting performance budgets, configuring servers, or diagnosing slow page loads. Core Principle Latency, not bandwidth, is the bottleneck. Most web performance problems stem from too many round trips, not too little throughput. A 5x bandwidth increase yields diminishing returns; a 5x latency reduction transforms the user experience. The foundation: Every request passes through DNS res…