A deep dive into shaving render latency on a Next.js dashboard through profiling, memoization, and edge caching.
We took a data-heavy Next.js dashboard and treated first paint as a budget, not an afterthought. Every re-render was profiled, every unnecessary component memoized, and every network call pushed to the edge.
The result was a render loop that consistently lands under 100ms on cold load, without sacrificing the interactivity the dashboard depends on.