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Qunar Tech Salon
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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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Recent Articles

Latest from Qunar Tech Salon

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Qunar Tech Salon
Qunar Tech Salon
May 11, 2022 · Frontend Development

Dynamic UI Implementation in Qunar's Large Client: Architecture, DSL Design, and Template Management

This article details Qunar's transition from native‑only homepage development to a dynamic UI solution using a Native‑plus‑DSL approach, covering background challenges, solution research, DSL architecture, data binding, virtual DOM layout, template management, real‑time preview, deployment results, and future plans.

DSLDynamic UILayout Engine
0 likes · 13 min read
Dynamic UI Implementation in Qunar's Large Client: Architecture, DSL Design, and Template Management
Qunar Tech Salon
Qunar Tech Salon
May 5, 2022 · Backend Development

Applying Domain-Driven Design (DDD) to Hotel Transaction Systems: Architecture and Code Implementation

This article explains how Domain-Driven Design is applied to a hotel transaction platform, detailing a four‑layer loose DDD architecture, the responsibilities of each layer, code implementation examples, and strategies for maintaining consistency across aggregates using events and factories.

DDDDomain-Driven DesignHotel Transaction
0 likes · 9 min read
Applying Domain-Driven Design (DDD) to Hotel Transaction Systems: Architecture and Code Implementation
Qunar Tech Salon
Qunar Tech Salon
Apr 27, 2022 · Fundamentals

Understanding Domain‑Driven Design: Strategic and Tactical Concepts for Complex Business Systems

This article introduces Domain‑Driven Design, explaining its strategic and tactical aspects, core concepts such as bounded contexts, ubiquitous language, aggregates, entities, and value objects, and illustrates how DDD can be applied to complex business domains like hotel transaction systems.

Bounded ContextDomain-Driven DesignStrategic Design
0 likes · 17 min read
Understanding Domain‑Driven Design: Strategic and Tactical Concepts for Complex Business Systems
Qunar Tech Salon
Qunar Tech Salon
Apr 20, 2022 · R&D Management

Designing Business Architecture for Activity Capability Layer: A Qunar Case Study

This article examines the concept of business architecture, its origins in TOGAF, and presents a detailed case study of Qunar’s activity capability layer design, highlighting pain points, architectural solutions, and a step-by-step methodology for building robust, reusable activity systems.

Business ArchitectureEnterprise ArchitectureQunar
0 likes · 15 min read
Designing Business Architecture for Activity Capability Layer: A Qunar Case Study
Qunar Tech Salon
Qunar Tech Salon
Mar 30, 2022 · Databases

Understanding and Optimizing PostgreSQL VACUUM and AUTOVACUUM

This article explains the purpose and mechanics of PostgreSQL's VACUUM and AUTOVACUUM processes, demonstrates practical examples of table bloat, transaction ID handling, and provides step‑by‑step guidance for precise triggering and performance optimization of vacuum operations.

AUTOVACUUMSQLVACUUM
0 likes · 37 min read
Understanding and Optimizing PostgreSQL VACUUM and AUTOVACUUM
Qunar Tech Salon
Qunar Tech Salon
Mar 23, 2022 · Backend Development

Case Study: DDD‑Driven Architectural Refactoring of the Hotel Pricing System at Qunar

This case study details how Qunar’s hotel pricing platform was reorganized in 2021 using Domain‑Driven Design and explicit architecture principles to streamline cross‑team collaboration, reduce data‑flow complexity, and improve response time by 25%, while aligning system structure with Conway’s Law.

Conway's lawDDDDomain-Driven Design
0 likes · 14 min read
Case Study: DDD‑Driven Architectural Refactoring of the Hotel Pricing System at Qunar
Qunar Tech Salon
Qunar Tech Salon
Mar 17, 2022 · Databases

Killing Slow Queries in MySQL: Problems, Drawbacks, and Practical Design Solutions

The article analyses why indiscriminately killing slow MySQL queries is risky, enumerates the drawbacks of common kill‑based approaches, and proposes more reliable designs such as registration, signature‑based killing, and source‑code modifications to safely mitigate query‑induced database avalanches.

MySQLSQL signaturedatabase performance
0 likes · 16 min read
Killing Slow Queries in MySQL: Problems, Drawbacks, and Practical Design Solutions