Distance Calculation

Dada Group Technology

Sep 13, 2021 · Backend Development

Design and Evolution of a High‑Performance Massive Distance‑Calculation Service at Dada Group

This article details Dada Group’s transition from a Redis‑based, low‑throughput distance‑calculation system to a high‑concurrency, low‑cost architecture leveraging GEOHASH indexing, cache sharing, and asynchronous processing, achieving billions of daily point‑pair calculations with sub‑100 ms latency and high value‑rate.

Distance Calculationbig data analysiscaching

0 likes · 12 min read

Design and Evolution of a High‑Performance Massive Distance‑Calculation Service at Dada Group

Dada Group Technology

Dec 27, 2018 · Backend Development

Evolution and Architecture of JD Daojia Location Service

This article explains how JD Daojia’s location system has evolved from simple distance calculations to a high‑performance, index‑driven backend service, detailing its core responsibilities, architectural stages, challenges, and the optimizations that improved accuracy, scalability, and resource usage.

Distance CalculationGISPerformance Optimization

0 likes · 10 min read

Evolution and Architecture of JD Daojia Location Service