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Optimizing GeoJSON Rendering Performance in Leaflet.js for High-Density Map Layers
When working on a recent data visualization project for mapping long-distance train routes, I ran into a performance bottleneck while trying to render high-density GeoJSON line data using Leaflet.js. The issue wasn’t in basic rendering — Leaflet handles most static maps well. The challenge was in maintaining performance across zoom levels and dynamically switching between multiple layers (routes) on user interaction, especially on mobile.
When working on a recent data visualization project for mapping long-distance train routes, I ran into a performance bottleneck while trying to render high-density GeoJSON line data using Leaflet.js.
The issue wasn’t in basic rendering — Leaflet handles most static maps well. The challenge was in maintaining performance across zoom levels and dynamically switching between multiple layers (routes) on user interaction, especially on mobile.
