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Design Uber (Ride-Sharing Platform)
End-to-end design of a real-time ride-matching platform handling millions of simultaneous GPS location updates, sub-10-second driver matching, dynamic surge pricing, and global trip management across 70 countries.
Why Uber Is a Hard System Design
Uber's core challenge is real-time bidirectional coordination under extreme location data volume. Every active driver sends a GPS update every 4–5 seconds. With 5M+ active drivers globally, that's 1M+ location writes/sec. Simultaneously, riders expect to be matched to a driver within 10 seconds — which requires the system to instantly find all nearby available drivers, rank them, send them an offer, handle acceptance or timeout, and confirm the trip. All of this must work across hundreds of cities with varying supply/demand ratios, in markets with different connectivity (2G in some regions), and under 99.99% availability requirements.