Distance Matrix

← Chương trước: Phần 6 — Xây dựng Mini Allocation Engine | Mục lục Series | Chương tiếp theo: Phần 8 — AI Agentic cho Dynamic IOR → Answer-first: Để tối ưu hóa chi phí định tuyến VRP, tự host GraphHopper và OSRM thay thế hoàn hảo các API thương mại đắt đỏ như Google Maps. Kết hợp Haversine lọc sơ cấp và Uber H3 Hexagon Caching trên Redis giúp giảm 95% chi phí tính toán và đảm bảo độ trễ sub-second. ...

GraphHopper Distance Matrix: API & OSM Hosting Guide Answer-first: GraphHopper distance matrix is a high-performance open-source routing engine endpoint that calculates travel times and road distances for N×M origin-destination coordinate pairs using OpenStreetMap data. By utilizing Contraction Hierarchies and memory-mapped graphs, self-hosted GraphHopper evaluates a 100×100 matrix in under 52ms, providing 99.7% cost savings over commercial APIs with runtime vehicle customization. How to Call the GraphHopper Matrix API (/matrix Endpoint) Running GraphHopper distance matrix in production requires configuring Docker deployment, the /matrix API endpoint, Custom Models for vehicle-specific routing (truck/motorcycle), H3-based Redis caching, and evaluating performance tradeoffs against OSRM, Valhalla, and Google Maps (for an in-depth analysis of routing engine selection, see our OSRM vs GraphHopper Architecture Comparison). ...