You've got a coordinate. You've got a pile of regions on a map. You need to know: which region does...
PostGIS ST_Intersects tests coordinates against GeoJSON polygons (geofence, delivery zone, flood map): one query for every spatial lookup. Architecturally universal pattern; the real bottleneck is not the algorithm but data wrangling and geometry management.
You've got a coordinate. You've got a pile of regions on a map. You need to know: which region does this point fall in, or is it inside one at all?
That single question hides inside a lot of features:
Geofencing: is this device or user inside the zone?
Service / delivery areas: does this address fall in our coverage?
Spatial lookups: which territory, district, or catchment owns this point?
There's a moment in almost every RAG project where someone asks the question that decides your next...
How proximity search works in apps like Yelp, using geohashing and spatial indexes to find nearby places fast. Covers…
pgvector or Pinecone" : this is not entirely about which one. This is about when and why. If you are...
THE PROBLEM Let's say you're building an app called "Tomato" to help people find killer...
The Problem: Finding a Needle in a Haystack Answer-first: Uber and Grab find the nearest...
Search through billions of items for similar matches to any object, in milliseconds. It’s the next generation of search, an API…
