Large Scale Map Visualization

This is the skill you need when your Leaflet map starts choking on marker density. It's specifically built around the Supercluster algorithm for handling anywhere from 5,000 to 100,000+ geographic points without turning your browser into a space heater. The approach is pragmatic: basic clustering under 1k markers, Supercluster with viewport loading up to 50k, then Web Workers and canvas rendering beyond that. You get PostGIS viewport queries, React optimization patterns, and actual performance tier breakdowns instead of vague best practices. If you're rendering real estate listings, sensor networks, or any dense point data on a map and performance is becoming a problem, this handles the entire stack from database queries to cluster expansion animations.