Qunar 2021 Technical Salon – Infrastructure Articles Collection (Databases, Operations, Components)
This article compiles the 2021 Qunar Technical Salon infrastructure series, presenting original technical writings on databases, operational practices, and core components, each linked to detailed posts that share real‑world experiences, design guidelines, and performance insights for engineers and practitioners.
The 2021 Qunar Technical Salon continued the tradition of sharing practical engineering knowledge, focusing on infrastructure topics such as databases, operations, and core components.
Database Articles
A Decade‑Long DBA’s Reflections and Summary – Author: Wang Zhufeng. An experienced DBA shares ten years of insights and lessons for database professionals.
PGHA of Qunar – Author: Li Hailong. A practical case study of Qunar’s PostgreSQL high‑availability solution.
ElasticSearch Index Design Guide – Author: Xu Ruizhe. Theory and practice of ES index design.
Evolution of Qunar Database Alert System – Author: Liu Pengfei. Enhancing database monitoring with precision and intelligence.
Flow‑Control‑Induced PXC Cluster Failure Analysis – Author: Lv Shang. Investigation of a database incident caused by traffic throttling.
Who Moved My Data? Qunar MySQL Sniffing Tool – Author: Lei Xiaolong. Using packet capture and protocol parsing to obtain full MySQL access logs.
Using pt‑osc for MySQL Schema Changes in Replication – Author: Gao Yingzhe. Demonstrates how the pt‑osc tool helps keep master‑slave consistency.
FDW+MV for PostgreSQL Data Synchronization – Author: Qi Jian. Leveraging foreign data wrappers and materialized views.
Understanding MySQL Seconds_Behind_Master – Author: Leng Zhenglei. Explains the calculation of replication lag.
MySQL Slow‑Query Risk Index Model – Author: Qian Fangyuan. Quantitative approach to slow‑query analysis.
Operations Articles
Qunar DNS System Construction – Author: Miao Hongtao. Describes how Qunar built and refined its DNS infrastructure.
Impact of Cisco VPC Peer‑Gateway on Direct BFD Neighbors – Author: Feng Yawei. Analyzes how Cisco VPC peer‑gateway affects BFD neighbor establishment.
Component Articles
Jar Component Automated Risk Monitoring and Upgrade Practice – Author: Zeng Zhaohu. Explores security notice monitoring, Jar asset collection, and automated upgrade workflows.
Overall, these posts provide deep technical insights, practical solutions, and design patterns for database management, operational reliability, and component security, serving as valuable references for engineers interested in large‑scale infrastructure engineering.
Qunar Tech Salon
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.
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