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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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Latest from Qunar Tech Salon

100 recent articles max

Qunar Tech Salon

Feb 20, 2024 · Databases

Qunar.com Redis Automation Operations System: Architecture, Deployment, Migration, Scaling, and Inspection

This article details Qunar.com's Redis automation operations system, covering background challenges, the high‑availability cluster architecture, resource management, automated deployment, various migration strategies, scaling mechanisms with RedisGate, inspection processes, and future AI‑driven enhancements.

AIAutomationMigration

0 likes · 14 min read

Qunar.com Redis Automation Operations System: Architecture, Deployment, Migration, Scaling, and Inspection

Qunar Tech Salon

Jan 18, 2024 · Databases

Optimization Journey of Qunar's Database Inspection and Alarm Systems

This article details Qunar's DBA team's systematic analysis of shortcomings in their original database inspection and alarm systems, the design and implementation of comprehensive metric enhancements, risk‑level classification, automated reporting, and alarm noise reduction, and reports the significant improvements in stability, efficiency, and fault‑free operation achieved through these optimizations.

Database MonitoringMySQLalarm system

0 likes · 15 min read

Optimization Journey of Qunar's Database Inspection and Alarm Systems

Qunar Tech Salon

Dec 29, 2023 · Artificial Intelligence

Design and Implementation of an AI‑Powered Development Assistant for Internal Use

This article presents the design, implementation, and measured impact of an AI‑driven development assistant integrated into the IDE, detailing its features such as intelligent context filling, custom Prompt templates, quick error diagnosis, internal system integration, and smart code completion, while also discussing limitations of existing tools like Copilot and ChatGPT and outlining future development plans.

AIDevelopment AssistantIDE integration

0 likes · 18 min read

Design and Implementation of an AI‑Powered Development Assistant for Internal Use

Qunar Tech Salon

Dec 20, 2023 · R&D Management

Digital Quality Measurement System at Qunar: Building, Implementing, and Operating a Comprehensive R&D Metrics Framework

This article details Qunar's end‑to‑end digital quality measurement system, describing how over 100 indicators were defined, filtered, and organized into a hierarchical model, how the platform ingests and visualizes data, and how continuous governance and PDCA cycles improve system stability and reduce complexity.

R&D metricscomplexity managementdigital measurement

0 likes · 21 min read

Digital Quality Measurement System at Qunar: Building, Implementing, and Operating a Comprehensive R&D Metrics Framework

Qunar Tech Salon

Dec 12, 2023 · Backend Development

System Slimming at Qunar Travel: Reducing Code and Service Footprint by 50% Using Observability and Automation

This article presents Qunar Travel's "system slimming" project, describing how observability techniques, a two‑stage strategy, and automated tooling were used to identify and remove unused services and code, achieving a 50% reduction in code size, a 26% cut in services, and measurable improvements in reliability and release efficiency.

Javabackend optimizationcode reduction

0 likes · 20 min read

System Slimming at Qunar Travel: Reducing Code and Service Footprint by 50% Using Observability and Automation

Qunar Tech Salon

Nov 22, 2023 · Operations

Optimizing Qunar's Monitoring System for Faster Fault Detection and Root‑Cause Analysis

This article details Qunar's comprehensive overhaul of its monitoring platform—introducing second‑level metrics, redesigning storage with VictoriaMetrics, optimizing client and server data collection, and building a root‑cause analysis tool—to dramatically reduce order‑related fault discovery time from minutes to under one minute.

TSDBcloud-nativefault detection

0 likes · 22 min read

Optimizing Qunar's Monitoring System for Faster Fault Detection and Root‑Cause Analysis

Qunar Tech Salon

Nov 20, 2023 · Databases

Design and Implementation of a High‑Performance Database Backup and Recovery System

This article presents a comprehensive analysis of the shortcomings of an existing database backup solution and details the architecture, high‑performance backup and restore mechanisms, dynamic throttling, storage abstraction, and experimental results of a newly designed, scalable backup‑recovery platform for MySQL databases.

Dynamic ThrottlingMySQLXtraBackup

0 likes · 33 min read

Design and Implementation of a High‑Performance Database Backup and Recovery System

Qunar Tech Salon

Nov 7, 2023 · Big Data

Building and Optimizing a Distributed Tracing System for Qunar Travel: APM Architecture, Performance Bottlenecks, and Solutions

This article details Qunar Travel's end‑to‑end design and optimization of a distributed tracing system within its APM platform, covering architecture choices, log‑collection and Kafka transmission bottlenecks, Flink task tuning, and the business value derived from trace and metric analysis.

APMBig DataFlink

0 likes · 22 min read

Building and Optimizing a Distributed Tracing System for Qunar Travel: APM Architecture, Performance Bottlenecks, and Solutions

Qunar Tech Salon

Oct 13, 2023 · Backend Development

Domain‑Driven Design and Microservice Architecture Evolution at Qunar.com

This presentation details Qunar.com's journey from a monolithic system to a service‑oriented, platform‑based architecture, emphasizing domain‑driven design principles, architectural evolution paths, reconstruction strategies, the adoption of the COLA framework, and the resulting improvements in organization and development efficiency.

COLA frameworkdomain-driven designsystem refactoring

0 likes · 21 min read

Domain‑Driven Design and Microservice Architecture Evolution at Qunar.com

Qunar Tech Salon

Sep 28, 2023 · Operations

Automated Root Cause Analysis for Flight Ticket Transaction Interception at Qunar: Design, Algorithm, and Performance Optimizations

This article describes how Qunar implemented an automated root‑cause analysis system for flight‑ticket transaction interception, detailing the problem background, system research, a custom algorithm focusing on explanatory power, performance optimizations that reduced analysis time from five minutes to under ten seconds, and the resulting operational improvements.

algorithmoperationsroot-cause analysis

0 likes · 13 min read

Automated Root Cause Analysis for Flight Ticket Transaction Interception at Qunar: Design, Algorithm, and Performance Optimizations