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3 docs tagged with "matching"

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Tinder

Race-free mutual match detection, precomputed recommendation decks, swipe deduplication with bitmaps, 2B swipes/day of write load, and attention distribution as a design constraint.

Uber — Ride Sharing

Location ingest at a million pings/sec, dispatch as a matching problem, surge from H3 supply-demand ratios, HMM map matching, and a trip state machine that survives dead zones.