Qunar Technology Carnival Interview Series: Insights on Hotel Flow Optimization, Database Architecture, and System Stability

Qunar Technology Carnival Introduction – Organized by Qunar Academy, the event showcases internal technical expertise through themed sessions such as QClient, QData, QTest, and QInfrarch, aiming to strengthen Qunar's technical brand and industry influence.

Interview with Liang Zhangping – Liang, who joined Qunar in 2013 and leads the domestic hotel pricing business, explains the motivation behind optimizing the main booking flow, the performance gains achieved (e.g., 4.16% absolute increase in quote coverage, 65.6% relative improvement, 61.3% reduction in no‑quote listings), and how technical solutions can meet business goals while enhancing product thinking.

Interview with Wang Zhufeng – Wang, a DBA team leader since 2013, shares his background in MySQL source‑code research and the migration from a 3M architecture to a PXC (Galera) architecture. He details the benefits of multi‑master writes, automated migration platforms, and the reasons why PXC provides higher availability, consistency, and near‑zero downtime.

Interview with Zheng Jimin – Zheng, responsible for system stability governance, describes the four‑step stability improvement process: analyzing past incidents, comparing database architectures, presenting the optimal architecture, and outlining a low‑impact migration strategy. He also highlights future automation goals such as traffic‑weight testing and JVM metric alerts.

Speaker Backgrounds – Liang has extensive experience in hotel pricing systems; Wang is an Oracle ACE and author of MySQL operational references; Zheng focuses on stability engineering and cross‑team collaboration.

Conclusion – The carnival provides a platform for sharing practical engineering experiences, encouraging cross‑team learning, and promoting continuous improvement in Qunar's infrastructure and services.