Official JD Tech public account delivering best practices and technology innovation.
This article shares the JD developer’s experience at the 2025 Huawei Developer Conference, detailing how the Cangjie language and a dual‑thread architecture were used to analyze and optimize high‑frequency JS API calls in JD mini‑programs on HarmonyOS, achieving up to 50% faster execution and a 20% reduction in cold‑start time.
Learn how to leverage MyBatis-Plus’s type-safe LambdaQueryWrapper together with Spring Boot’s @Async annotation to build efficient, asynchronous database operations, covering basic usage, advanced thread-pool configuration, exception handling, transaction management, and real-world scenarios for backend developers.
New developer Li Ming’s frustrating onboarding experience highlights hidden business rules, undocumented code, and poor knowledge transfer, prompting him to build an AI‑driven knowledge base that links code changes, requirements, and operational docs, ultimately streamlining troubleshooting, accelerating feature development, and improving knowledge retention across teams.
This article details how JD.com’s AI-powered virtual try‑on system, integrated with the Jingmai A/B testing platform, transformed fashion e‑commerce by generating realistic model images and videos, reducing production costs to near zero, cutting design cycles from weeks to hours, and increasing conversion rates by over 80% during major sales events.
This article details JD's collaboration with Huawei at the 2025 Developer Conference, showcasing how the Cangjie language was used to analyze and optimize high‑frequency JS API calls in HarmonyOS mini‑programs, resulting in significant reductions in main‑thread load, faster cold‑start times, and a roadmap for broader cross‑platform performance improvements.
JoyGen introduces a two‑stage framework that combines 3D facial reconstruction with audio‑driven motion generation to produce synchronized, high‑fidelity talking‑face videos, and validates its effectiveness on both the HDTF benchmark and a newly built high‑resolution Chinese speaking‑face dataset.
This article explains the hidden performance killer of cache false sharing in multicore Java applications, demonstrates its impact with benchmark code, and shows how padding, the @Contended annotation, and Caffeine's internal structures can eliminate the issue for faster execution.
This article dissects Guava Cache's source code, explaining its segmented lock architecture, data structures, put/get implementations, cleanup and eviction mechanisms, and compares its performance and design choices with the more modern Caffeine cache library.
This article explains why newly deployed front‑end pages often still display old content due to browser, Nginx, or CDN caching, and provides a three‑step method—including proper cache‑control headers, hash‑named assets, and version‑based fallback—to ensure users always see the latest version.
This comprehensive tutorial explains the fundamentals of SNMP, its architecture, versions, message types, MIB structure, and practical usage—including command‑line tools and Java code examples—to help network administrators efficiently monitor and manage devices.
