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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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Latest from Dada Group Technology

99 recent articles

Dada Group Technology

Jun 6, 2022 · Backend Development

Evolution of JD Daojia Search System Architecture from Version 1.0 to 3.0

The article details the progressive architectural evolution of JD Daojia's search system—starting from a simple, single‑layer ES‑based 1.0 design, through the 2.0 overhaul that introduced full‑recall, independent ranking services, and index disaster‑recovery, to the 3.0 version that adds multi‑path recall, sophisticated ranking models, and automated routing for high availability.

ElasticsearchScalabilitySearch

0 likes · 20 min read

Evolution of JD Daojia Search System Architecture from Version 1.0 to 3.0

Dada Group Technology

May 20, 2022 · Backend Development

Design and Evolution of JD Daojia Product Governance System

The article details the background, architecture, early challenges, redesign principles, business and technical issues, and future plans of JD Daojia's product governance system, illustrating how a micro‑service based backend platform detects and resolves compliance problems such as sensitive words, inaccurate weight, and image violations.

Backend ArchitectureMicroservicesSystem Design

0 likes · 15 min read

Design and Evolution of JD Daojia Product Governance System

Dada Group Technology

May 6, 2022 · Frontend Development

Improving Usability and Efficiency of the Cashier System: Front‑End Architecture Redesign and Component Refactoring

This article analyzes the usability and efficiency issues of the JD.com to‑home cash register H5 and RN versions, proposes a front‑end architectural redesign with component reuse, layering, and design principles, and demonstrates the resulting performance gains, reduced code entropy, and future improvement plans.

Component DesignUsabilityefficiency

0 likes · 15 min read

Improving Usability and Efficiency of the Cashier System: Front‑End Architecture Redesign and Component Refactoring

Dada Group Technology

Apr 29, 2022 · Frontend Development

Micro‑Frontend Architecture for Dada Express Operation System: Challenges and Solution

The Dada Express operation system, originally a monolithic front‑end composed of rapidly growing sub‑systems, suffered from queued deployments, inability to roll back, and slow builds, leading to a micro‑frontend redesign using single‑spa, import‑maps, and SystemJS to isolate, version, and accelerate development without sacrificing user experience.

Frontend ArchitectureImport MapsIsolation

0 likes · 16 min read

Micro‑Frontend Architecture for Dada Express Operation System: Challenges and Solution

Dada Group Technology

Apr 22, 2022 · Industry Insights

How Traffic Replication and Automated Regression Supercharge Test Efficiency

This article examines the challenges of high‑cost test case maintenance and low‑efficiency regression, then details how HTTP and microservice traffic replication, automatic seed case generation, and integrated CI/CD‑driven interface and process automation can dramatically improve testing speed, coverage, and quality.

API testingMicroservicesSoftware quality

0 likes · 13 min read

How Traffic Replication and Automated Regression Supercharge Test Efficiency

Dada Group Technology

Apr 8, 2022 · Operations

Marketing Guard: A Risk Pre‑Warning System for E‑Commerce Marketing Operations

The article presents a comprehensive analysis of marketing‑related financial loss cases, outlines the design and implementation of a non‑intrusive, event‑driven Marketing Guard system with dual‑layer ES‑HBase storage, and discusses its operational safeguards, achievements, shortcomings, and future development plans.

OperationsSystem Architecturemarketing risk

0 likes · 12 min read

Marketing Guard: A Risk Pre‑Warning System for E‑Commerce Marketing Operations

Dada Group Technology

Mar 25, 2022 · Backend Development

Optimizing Log4j2 Logging: Reducing Disk and CPU Usage, Asynchronous Logging, and Traceability with ThreadLocal and TTL

This article presents a comprehensive approach to optimizing Log4j2 logging in high‑traffic Java services by reducing disk and CPU consumption through log level control and pattern tuning, adopting asynchronous logging, and enabling end‑to‑end request traceability using ThreadLocal, TransmittableThreadLocal, and MDC techniques, supported by performance test results and practical recommendations.

JavaResource OptimizationTTL

0 likes · 14 min read

Optimizing Log4j2 Logging: Reducing Disk and CPU Usage, Asynchronous Logging, and Traceability with ThreadLocal and TTL

Dada Group Technology

Mar 11, 2022 · Operations

Design and Iteration of JD Daojia Order Timeliness System

This article details the background, overall architecture, iterative improvements, and future directions of JD Daojia's order timeliness system, covering early limitations, business‑driven challenges, solution iterations, order‑control mechanisms, product‑dimension handling, and the final business architecture to enhance fulfillment rates and user experience.

BackendJD DaojiaOperations

0 likes · 11 min read

Design and Iteration of JD Daojia Order Timeliness System

Dada Group Technology

Feb 25, 2022 · Databases

Practical Deployment and Operation Guide for StarRocks OLAP Database

This article presents a comprehensive overview of StarRocks, covering its key features, deployment challenges, backup and synchronization methods, cluster configuration and upgrade procedures, as well as monitoring and alerting solutions, followed by practical lessons learned from real‑world usage.

BackupStarRocksmonitoring

0 likes · 13 min read

Practical Deployment and Operation Guide for StarRocks OLAP Database

Dada Group Technology

Jan 21, 2022 · Industry Insights

Evolving a Top E‑commerce Recommendation Engine: From V1.0 to V3.0

This article examines the step‑by‑step evolution of the recommendation framework used by a major e‑commerce service, detailing the shortcomings of the initial V1.0 design, the vertical and modular refinements introduced in V2.0, and the dynamic configuration, pipeline, and service‑oriented enhancements implemented in V3.0 to improve scalability, stability, and fine‑grained experimentation.

Configuration ManagementPipelineScalability

0 likes · 15 min read

Evolving a Top E‑commerce Recommendation Engine: From V1.0 to V3.0