Real-time Driver Location Tracking in .NET: Redis GEO, Channels and SignalR

Short summary

Deep technical tutorial on building an Uber-scale location tracking system in .NET using Redis GEO for geospatial queries, .NET Channels for non-blocking HTTP decoupling, and background processing. Handles 5M drivers with 1.25M writes/sec and sub-millisecond latency via O(N+log M) GEOSEARCH lookups.

• •Use Redis GEO sorted sets instead of SQL for high-frequency, short-lived location data
• •Decouple HTTP endpoints from Redis writes using .NET Channels to prevent backpressure
• •Geospatial queries scale to millions of positions with millisecond response times

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