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location-service

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Architecture Digest
Architecture Digest
Dec 4, 2019 · Databases

Understanding Redis GEOADD and GEORADIUS: Source‑Code Analysis and Algorithm Details

This article explains how Redis implements location‑based services using GEOADD and GEORADIUS commands, analyzes their source code, describes the underlying geohash algorithm, and evaluates the time‑complexity of nearby‑people queries, providing practical insights for building efficient proximity features.

Redisalgorithmdatabases
0 likes · 17 min read
Understanding Redis GEOADD and GEORADIUS: Source‑Code Analysis and Algorithm Details
JD Tech
JD Tech
Jan 2, 2019 · Backend Development

Evolution and Optimization of JD Daojia's Location Service System

This article explains how JD Daojia's location system, which powers store discovery and distance calculations for its O2O platform, has evolved through multiple architectural stages, addressed precision and performance challenges, and been optimized with indexing, Mercator projection, and traffic‑shaping techniques to achieve stable, high‑availability service.

GISIndexingPerformance Optimization
0 likes · 10 min read
Evolution and Optimization of JD Daojia's Location Service System
Dada Group Technology
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 CalculationGISInverted Index
0 likes · 10 min read
Evolution and Architecture of JD Daojia Location Service