Radar's HorizonDB: A Rust-Powered Geospatial Database
2025-08-09
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Radar processes over 1 billion API calls daily, demanding high-performance geolocation services. To meet this challenge, they built HorizonDB, a geospatial database written in Rust, replacing their previous MongoDB and Elasticsearch setup. HorizonDB consolidates multiple location services and leverages technologies like RocksDB, S2, Tantivy, FSTs, LightGBM, and FastText to achieve millisecond response times and linear scalability. This resulted in significant cost savings, improved developer efficiency, and a robust foundation for future growth.
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Geospatial Database