Victory
How to write a good unit test
A unit test is a type of software testing that focuses on verifying the correctness of individual units of a software system...
Program
31 posts
Victory
A Deep Dive into Delayed Tasks: From Thread Pools to Timing Wheels
An in-depth exploration of delayed task scheduling, comparing common approaches such as ScheduledThreadPoolExecutor, timing wheels, and QMQ's delay message implementation.
Victory
Publishing Your Own Open Source Project to Maven Central
A step-by-step guide to open-sourcing a Java project and publishing it to Maven Central using Sonatype OSSRH.
Victory
Java Multithreading Explained: Concepts, Lifecycle, and Thread Pools
A comprehensive guide to Java multithreading, covering thread fundamentals, lifecycle, synchronization, and thread pool design.
Victory
A Deep Dive into Node.js Worker Threads
An in-depth explanation of Node.js worker threads, how they work internally, and how to use them efficiently for CPU-intensive workloads.
Victory
Performance Comparison: Spring MVC vs Spring WebFlux
A performance comparison between Spring MVC and Spring WebFlux for IO-intensive workloads, based on real load testing results.
Victory
Kafka Overview: Architecture, Components, and Internals
An overview of Apache Kafka, covering its architecture, core components, and internal mechanisms based on Kafka 2.4.
Victory
RocketMQ Overview: Architecture, Components, and Message Flow
An in-depth overview of Apache RocketMQ, covering its core features, NameServer, Broker, Client internals, and message storage.
Victory
Troubleshooting a Gradle Build Failure: Missing DoNotMock
A real-world case study of diagnosing and fixing a Gradle build failure caused by dependency conflicts in error_prone_annotations.
Victory
OTA Industry Knowledge: Key Concepts and Booking Flow
An overview of essential OTA (Online Travel Agency) concepts, systems, and booking workflows used in the travel industry.
Victory
Getting Started with Drone: CI/CD Powered by Docker
An introductory guide to Drone CI/CD, explaining its core concepts, Docker-based pipelines, and a practical setup with GitHub.
Victory
Apache Flink for Beginners: Architecture, Concepts, and Stream Processing
A comprehensive introduction to Apache Flink, covering big data architectures, stream processing fundamentals, and Flink’s core features.
Victory
Project Retrospective: Lessons from a Real-World System
A practical project retrospective covering system goals, technology choices, performance bottlenecks, and operational lessons.
Victory
Scraping and Parsing Chinese Disaster Early Warning Information
How to scrape disaster warning data from China Weather Network and parse XML responses using Java and Jackson.
Victory
Diagnosing CPU Spikes Caused by Tomcat Hot Deployment
A real-world troubleshooting guide to identifying and fixing abnormal CPU spikes caused by Tomcat hot reload behavior in production.
Victory
Diagnosing Slow Response Issues in Production Systems
A real-world incident analysis of slow responses in a WeChat platform, covering concurrency spikes, Tomcat limits, and database bottlenecks.
Victory
Reflections on Project Refactoring
Practical lessons and management insights gained from real-world system refactoring projects, focusing on data migration, team coordination, and technology choices.
Victory
Handling OutOfMemoryError Issues in JasperReports
Practical strategies for diagnosing and mitigating OutOfMemoryError problems when exporting large PDFs with JasperReports.
Victory
Enforcing Code Style with Checkstyle in Legacy Projects
How to introduce Checkstyle into an existing Maven project and validate only newly changed files to avoid massive refactoring.
Victory
Integrating Spring Boot with MyBatis, Druid, and Quartz
A practical guide to integrating MyBatis, Druid, and Quartz into a Spring Boot application, including dynamic scheduled jobs and H2-based testing.
Victory
MySQL 5.7 GROUP BY Error 1055 Explained
Understanding MySQL 5.7 GROUP BY error 1055, ONLY_FULL_GROUP_BY mode, and practical solutions to fix incompatible queries.
Victory
Troubleshooting High CPU Usage in Production Java Applications
A systematic approach to diagnosing and resolving high CPU usage issues in production Java systems, based on real-world experience.
Victory
Running MySQL with Docker on CentOS
A step-by-step guide to installing Docker and Docker Compose on CentOS and running a MySQL 5.7 container with persistent data and configuration.
Victory
Feign Basics: Building Elegant Java HTTP Clients
A practical introduction to Feign, covering core concepts, usage patterns, and integrations for building clean Java HTTP clients.
Victory
HashMap Source Code Analysis: Capacity, Load Factor, and Resize
A deep dive into the JDK 7 HashMap implementation, explaining capacity calculation, load factor, and resize behavior.
Victory
JAVA并发编程: CAS和AQS
说起JAVA并发编程，就不得不聊聊CAS(Compare And Swap)和AQS了()。 --- > CAS(Compare And Swap)，即比较并交换。是解决多线程并行情况下使用锁造成性能损耗的一种机制，CAS操作包含三个操作数——内存位置（V）、预期原值（A）和新值(B)。如果内存位置...
Victory
Java Concurrency Fundamentals: CAS and AQS Explained
An in-depth explanation of CAS (Compare-And-Swap) and AQS (AbstractQueuedSynchronizer), the foundation of Java concurrent programming.
Victory
Lock vs Synchronized in Java: When and Why to Use Each
A detailed comparison of Java's synchronized keyword and the Lock API, explaining their differences, use cases, and best practices.
Victory
Installing and Using MySQL 5.7 Without an Installer (Windows)
A step-by-step guide to installing MySQL 5.7 using the no-install ZIP package on Windows when MSI installers are restricted.
Victory
Fixing Struts2 Redirect Issues Under HTTPS
How to resolve mixed-content errors caused by Struts2 redirects when applications are deployed behind HTTPS using Nginx.