8th June 2008 - Link Blog
Geohash for spatial index and search. Nice, clear explanation of what a Geohash is. It’s a way of encoding a lat/lon position as a short string, with the useful property that similar co-ordinates with more or less significant figures share a common prefix in their geohash.
Recent articles
- Some thoughts on the Navier–Stokes Millennium Prize Problem - 8th September 2026
- The Pelican comparison grid for Astra is pretty interesting - 4th September 2026
- OpenAI's rogue agents were caught communicating via public wikis - 4th September 2026