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How Does Uber Find Nearby Drivers

How Does Uber Find Nearby Drivers: • They created a hexagonal-shaped hierarchical geospatial index called H3 • They find nearby drivers by indexing locations using the H3 library • They divide Earth's surface into cells on a flat grid • They identify relevant cells of the rider's area to find nearby drivers • They use hexagonal cells for easier distance measurement between cells • They subdivide a hexagon into 7 hexagons to support different data resolutions • They index an area as small as 1 square meter • They do constant-time bitwise operations to switch between data resolutions • They use Redis cache to buffer driver locations for map matching • They use the consistent hash ring for scalability --------------------------------------------------------------------------------- SUBSCRIBE OR I STOP WRITING MY NEWSLETTER ╔═╦╗╔╦╗╔═╦═╦╦╦╦╗╔═╗ ║╚╣║║║╚╣╚╣╔╣╔╣║╚╣═╣ ╠╗║╚╝║║╠╗║╚╣║║║║║═╣ ╚═╩══╩═╩═╩═╩╝╚╩═╩═╝ → ‪@systemdesignone‬ ---------------------------------------------------------------------------------