OpenStreetMap US

Radar CTO Tim Julien shares the internals behind HorizonDB, Radar’s geospatial datastore. Learn how Radar designed a high-throughput, low-latency datastore for search and geocoding use cases—covering architecture, performance, and key lessons.

Speaker

Tim Julien

Previously VP of Engineering at Bonobos and Director of Engineering at Foursquare. Tim Julien is CTO at Radar, the #1 geolocation platform.

Next up in State of the Map US

Previous talk
Between Two Turns: Identifying and defining turn paths

Jun 20, 2025 · Kuan Butts

When preparing OSM data for use in a routing engine, graph topology is typically simplified to reduce network complexity. This compresses detailed ways into single edges, ideally between single-node intersections. However, complex...