Focus on Java-related technologies: SSM, Spring ecosystem, microservices, MySQL, MyCat, clustering, distributed systems, middleware, Linux, networking, multithreading. Occasionally cover DevOps tools like Jenkins, Nexus, Docker, and ELK. Also share technical insights from time to time, committed to Java full-stack development!
This guide walks developers through the fundamentals of database indexes, explaining why they matter, how they work, common pitfalls, and best‑practice design tips with concrete SQL examples and visual illustrations.
This guide explains how MySQL InnoDB full‑text search works, covering inverted indexes, index creation, query syntax for natural language, boolean, and query‑expansion modes, relevance calculation, and index maintenance.
This article explains how to design a high‑concurrency ticket‑spike service that can handle millions of requests by using multi‑layer load balancing, Nginx weighted round‑robin, local stock caching, and atomic Redis operations, complete with Go code examples and performance testing.
A massive MySQL table with billions of rows ran out of INT auto‑increment IDs, causing insert failures; the article walks through the root cause analysis, three migration strategies, practical BIGINT conversion steps, performance monitoring tricks, and lessons learned about schema design and concurrency.
This article presents a step‑by‑step guide that combines lazy bean initialization, precise component scanning, JVM flag tuning, auto‑configuration exclusion, class‑loading analysis, delayed datasource creation, and AOT/layered compilation to reduce Spring Boot startup latency by up to 70% in real‑world services.
This article examines the detailed steps and timing of establishing a MySQL connection from a Java web application, measuring network round‑trips and total latency, and demonstrates how even a minimal connection can consume hundreds of milliseconds, making connection pooling essential for high‑traffic services.
Fast‑Retry is a high‑performance asynchronous retry framework that can handle millions of tasks with far lower latency than traditional synchronous retry libraries like Spring‑Retry or Guava‑Retry, thanks to its non‑blocking design, customizable retry logic, and support for both programmatic and annotation‑based usage.
MyPerf4J is a high‑throughput, low‑latency Java performance monitoring tool that uses a non‑intrusive JavaAgent to collect real‑time method, memory, GC, and class metrics, offering developers quick bottleneck detection in development and continuous observability in production.
This comprehensive guide explores the most powerful Spring Boot capabilities—including @Conditional, @ConfigurationProperties, Actuator, DevTools, Retry, Cache, testing strategies, custom starters, Admin, and CLI—providing code examples and deep analysis to help developers boost productivity, reliability, and maintainability of their applications.
This article presents ten practical MySQL techniques—from using JSON columns for flexible data to leveraging CTEs, window functions, and advanced clauses like WITH ROLLUP and INSERT IGNORE—each illustrated with real‑world scenarios and ready‑to‑run SQL code to improve query efficiency and developer productivity.
