Build a Real-Time Ride-Hailing Dispatch Engine (Golang & Redis)
Prerequisite: Familiarity with the concepts introduced in Part 3 — Event Streaming Kafka. Review our high-throughput routing engine analysis in OSRM vs. GraphHopper: High-Throughput Routing Engines Comparison to understand candidate distance matrix generation. Answer-first: A real-time ride-hailing dispatch engine matches riders and drivers by indexing spatial locations with H3/S2 geospatial cells in Redis and executing batched bipartite matching in Golang, minimizing total fleet pickup ETA in under 2 seconds. Architecting this pipeline enforces sub-50ms P99 latency guarantees, OpenTelemetry GenAI semantic conventions, and 2026 Model Context Protocol ttlMs cache invalidation parameters. ...