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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
Jun 22, 2022 · Operations

Design and Implementation of Multi‑Cluster HPA Metrics Collection, Analysis, and Reporting in Kubernetes

This article explains the background, benefits, and measurement criteria of Kubernetes Horizontal‑Pod‑Autoscaler (HPA), describes the creation of metric tables and SQL queries for collecting scaling events and CPU usage, and presents a Python‑based workflow that aggregates the data, stores daily reports, validates results, and sends automated email summaries.

HPAKubernetesMonitoring
0 likes · 19 min read
Design and Implementation of Multi‑Cluster HPA Metrics Collection, Analysis, and Reporting in Kubernetes
Qunar Tech Salon
Qunar Tech Salon
Jun 16, 2022 · Operations

Practical Chaos Engineering Practices at Qunar Travel: Architecture, Scenarios, and Automation

This article details Qunar Travel's mature chaos engineering platform built on chaosblade, covering value analysis, system architecture, shutdown and dependency drills, automated closed‑loop testing, attack‑defense exercises, and the measurable reliability improvements achieved across thousands of services.

Fault Injectionchaos-engineeringdistributed-systems
0 likes · 18 min read
Practical Chaos Engineering Practices at Qunar Travel: Architecture, Scenarios, and Automation
Qunar Tech Salon
Qunar Tech Salon
Jun 8, 2022 · Backend Development

Design and Implementation of a Systematic Cache Architecture for High‑Performance Business Systems

This article describes how a multi‑layered cache system—including a DAO‑level Redis cache, shared cache components, and global cache planning—was designed, implemented, and deployed to reduce database QPS by over 80%, cut response latency, and improve overall system stability in a high‑traffic e‑commerce platform.

CachingPerformancedatabase
0 likes · 30 min read
Design and Implementation of a Systematic Cache Architecture for High‑Performance Business Systems
Qunar Tech Salon
Qunar Tech Salon
May 23, 2022 · Fundamentals

How to Write Effective Technical Articles: Value, Breakthrough, and Practical Tips

This article shares the author’s experience and practical guidance on writing technical articles, covering why it matters, how to overcome initial hesitation, methods for continuous improvement, and detailed tips on content completeness, logical flow, structure, visual design, and daily habits.

article writingcontent creationknowledge sharing
0 likes · 15 min read
How to Write Effective Technical Articles: Value, Breakthrough, and Practical Tips
Qunar Tech Salon
Qunar Tech Salon
May 19, 2022 · Operations

Design and Optimization of a Large‑Scale Monitoring System at Qunar.com

This article describes the architecture, challenges, and performance optimizations of Qunar.com's Watcher monitoring platform, covering massive metric collection, master‑worker redesign, Graphite/Whisper storage enhancements, and future migration to Go‑based cloud‑native solutions.

CI/CDMonitoringcloud-native
0 likes · 13 min read
Design and Optimization of a Large‑Scale Monitoring System at Qunar.com
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