Qunar Tech Salon is a learning and exchange platform for Qunar engineers and industry peers. We share cutting-edge technology trends and topics, providing a free platform for mid-to-senior technical professionals to exchange and learn.
This article presents a comprehensive case study of how Qunar.com’s hotel data warehouse team identified performance bottlenecks in the L‑page traffic table, applied a series of "split, lift, parallel, delay" strategies, and achieved significant reductions in processing time, storage usage, and query latency.
This article explains how Qunar integrated iOS 16 Live Activities to display real‑time travel updates on the lock screen and Dynamic Island, covering background, feature comparison, requirements, system design, Swift implementation, push‑based updates, debugging tips, and lessons learned.
The article details how Qunar's Noah environment platform evolved through three stages—automatic environment definition, cost‑effective build optimization, and developer‑centric efficiency improvements—to automate test environment provisioning, reduce resource consumption, and achieve high build success rates across thousands of micro‑service applications.
This article describes Qunar's comprehensive root cause analysis platform, detailing its background, data-driven fault categorization, architecture—including trace, runtime, middleware, and event analysis modules—and demonstrates its high accuracy and practical impact on reducing incident resolution times across microservice services.
This article describes Qunar's systematic client crash governance framework, covering background challenges, APM‑based fast problem discovery, multi‑level alerting, common‑issue remediation, code‑level fixes for URL and Bundle size crashes, detection tools, code checks, automated testing, and the measurable improvements achieved in Android and iOS stability.
This article presents a comprehensive case study of the SPA system used by Qunar, detailing its business and technical complexity, the adoption of Domain‑Driven Design and an adapter‑based architecture, the migration to Spring WebFlux for reactive asynchronous processing, and the measurable improvements achieved after refactoring.
This article introduces Bistoury, a one‑stop Java application diagnostic solution that improves upon Arthas by adding a web UI, multi‑machine support, integrated agent‑proxy architecture, custom classloaders, online debugging, per‑thread CPU monitoring, and heap object statistics.
This article details Qunar's comprehensive approach—leveraging automated functional testing, an intelligent recommendation platform, and a localized development workflow—to cut release fault rates below 0.4‰, slash testing effort, and dramatically improve overall development and operational efficiency.
This article describes how Qunar's technology center defined, measured, and managed system complexity through a custom modeling framework, implemented a dashboard for continuous monitoring, and established an anti‑corruption governance process that limits complexity growth to maintain low maintenance costs across hundreds of applications and systems.
This article details the background, challenges, migration plan, automation, and performance‑tuning techniques used to relocate a petabyte‑scale Elasticsearch logging cluster from one data center to another, highlighting practical lessons and measurable improvements in stability and migration speed.
