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Dada Group Technology
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Dada Group Technology

Sharing insights and experiences from Dada Group's R&D department on product refinement and technology advancement, connecting with fellow geeks to exchange ideas and grow together.

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Recent Articles

Latest from Dada Group Technology

99 recent articles
Dada Group Technology
Dada Group Technology
Jun 11, 2019 · Big Data

Building and Evolving the Dada‑JD Daojia Big Data Platform: Architecture, Strategies, and Lessons Learned

This article presents a comprehensive case study of the Dada‑JD Daojia big data platform, detailing its evolution from a MySQL‑based warehouse to a multi‑layered One Data, One Platform, One Service, Many Apps architecture, the technical challenges faced, and the strategic approaches adopted to ensure coverage, accuracy, stability, and scalability.

Big DataData GovernanceData Platform
0 likes · 14 min read
Building and Evolving the Dada‑JD Daojia Big Data Platform: Architecture, Strategies, and Lessons Learned
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.

GISdistance-calculationinverted index
0 likes · 10 min read
Evolution and Architecture of JD Daojia Location Service
Dada Group Technology
Dada Group Technology
Nov 30, 2018 · Big Data

Evolution of JD Daojia Order Center Elasticsearch Cluster: Architecture, Scaling, and Lessons Learned

This article details how JD Daojia's order center migrated from MySQL to a multi‑stage Elasticsearch cluster—covering initial deployment, isolation, replica tuning, primary‑secondary setup, real‑time dual‑cluster upgrades, data synchronization methods, and key pitfalls—to achieve massive scalability, high availability, and performance for billions of orders.

Cluster ArchitectureElasticsearchScalability
0 likes · 13 min read
Evolution of JD Daojia Order Center Elasticsearch Cluster: Architecture, Scaling, and Lessons Learned
Dada Group Technology
Dada Group Technology
Aug 31, 2018 · Backend Development

Design and Evolution of an Order Dispatch System for Instant Delivery Platforms

This article describes the end‑to‑end evolution of a large‑scale order dispatch architecture, covering the shift from simple pool display to algorithmic assignment using data mining, genetic algorithms, timing‑wheel scheduling, and a Redis‑backed implementation to improve delivery efficiency and rider experience.

Backend Architectureinstant deliveryorder dispatch
0 likes · 11 min read
Design and Evolution of an Order Dispatch System for Instant Delivery Platforms
Dada Group Technology
Dada Group Technology
Jul 24, 2018 · Operations

Building a Scalable Growth Operations Platform: User Grouping, Dynamic Queries, and Automation

The article describes how a growth operations team can improve efficiency by designing a flexible user‑grouping system, dynamic query generation, and automated rule execution, while addressing data latency, real‑time processing, and scalability challenges through a Lambda‑style architecture.

Dynamic QueryLambda architectureUser Segmentation
0 likes · 14 min read
Building a Scalable Growth Operations Platform: User Grouping, Dynamic Queries, and Automation
Dada Group Technology
Dada Group Technology
Mar 8, 2018 · Operations

Effective Logging Practices and Standards for Java Backend Systems

This article explains why proper logging is crucial for rapid issue diagnosis, defines useful log levels, outlines team-wide logging rules, describes log format standardization, introduces traceId for request tracing, and presents monitoring and alerting strategies to improve overall system reliability.

best practicesjavalog levels
0 likes · 11 min read
Effective Logging Practices and Standards for Java Backend Systems