Caching Geospatial Queries Without a Specialized Geo Database
You don’t need PostGIS or a geohash library to cache repeat road-distance lookups: rounding coordinates and a unique index gets you most of the win.
Geospatial
Self-Hosting a Routing Engine Instead of Paying Per API Call
Road distance, not straight-line distance, is what travel expense claims and delivery pricing actually need, here’s how to get it without a metered maps API.