Technology exchange and sharing for quality engineering
This article explains how to replace Java's default DNS resolver with a custom NameService, disable DNS caching, and manipulate DNS entries at runtime using reflection, enabling flexible, environment‑agnostic automated test cases without hard‑coding IP addresses.
Vipshop's in‑house sentiment monitoring platform integrates web‑scraped reviews, WeChat comments and internal service messages, applying lexical sentiment scoring, dictionary‑based Chinese word segmentation, TF‑IDF keyword ranking and lightweight classification to deliver real‑time insights, alerts and actionable reports for thousands of daily user comments.
The article introduces a comparative test platform for financial core systems that automates regression testing of batch jobs, dramatically reducing test cycles from days to under one, while ensuring billing calculations remain accurate across evolving business scenarios.
This article provides a comprehensive guide to Java logging frameworks, detailing the roles of SLF4J, Log4j, Logback, and Log4j2, comparing their architectures, showing how to configure each with XML files and Maven dependencies, and offering practical code examples and troubleshooting tips.
This article outlines the challenges faced by the Beijing supply‑chain team in implementing functional‑test CI, presents a standardized, automated and visualized CI solution centered on automated testing, and demonstrates the resulting low‑cost, high‑output architecture, performance metrics, and future roadmap.
This article details how the AutoV IT framework addressed low test coverage, high maintenance costs, and data dependencies in a shopping‑cart checkout system, introducing embedded service startup, mock services, Excel‑driven test cases, and parallel execution to achieve up to 30% faster testing cycles and significantly higher confidence in releases.
This article investigates the performance differences between the Connection and Template modes of Venus‑cache, presenting test scenarios on physical and cloud servers, analyzing throughput, lock contention, and thread behavior, and offering a solution to improve QPS by optimizing connection handling.
A staging environment’s new scheduled task kept failing due to Zookeeper disconnections caused by packets exceeding the default 1 MB maxBuffer, and the article explains the root cause, heartbeat timing, and how adjusting Djute.maxbuffer or upgrading Zookeeper resolves the issue.
This report details how integrating OSP Proxy as an SDK into the Netty‑based Janus gateway dramatically improves throughput, yet introduces a 100 KB payload memory‑leak bug, analyzes its root causes, and evaluates mitigation strategies such as connection and worker‑thread tuning.
This article details a comprehensive robustness test of a core public service system's caching layer, exposing how decreasing Memcached (MC) instances dramatically impacts TPS and latency, analyzes the underlying Ketama consistent‑hash algorithm, and proposes concrete improvements to mitigate such failures.
