14.1 Requirements & Capacity Estimation

• DAU: 5 million active riders, 500,000 active drivers
• GPS Pings: 500,000 drivers emitting location every 4 seconds = 125,000 QPS telemetry ingress
• Ride Requests: 100,000 rides/hour peak = ~30 writes/sec
• Network Bandwidth: 125,000 QPS * 100 bytes = 12.5 MB/sec continuous ingress.