Explaining distributed systems and architecture through stories. Author of the "JVM Performance Tuning in Practice" column, open-source author of "Spring Cloud in Practice PassJava", and independently developed a PMP practice quiz mini-program.
This article examines the shortcomings of local locking in microservices, introduces distributed locking concepts, and walks through five progressive Redis-based lock implementations—from a simple SETNX bronze approach to a Lua‑scripted diamond solution—detailing their mechanisms, code examples, and trade‑offs.
This article explains full‑chain load testing, compares Alibaba Cloud's shadow‑database and shadow‑table data‑isolation solutions, and evaluates them on performance, stability, and cost to help practitioners choose the most suitable approach for their production environments.
This article provides a comprehensive guide to Java exception handling, covering exception categories, bytecode‑level mechanisms, common pitfalls, Alibaba’s coding standards, best‑practice recommendations, custom exception design, and global handling strategies for RPC and HTTP services in Spring Boot.
This article documents a MySQL read‑write splitting architecture, investigates an unexpected slave‑node crash, and provides a step‑by‑step guide to using Keepalived for monitoring and automatically restarting the MySQL container to achieve high availability of the replica.
This article explains how to set up a Docker-based deployment workflow on Windows, covering Hyper‑V activation, Docker Desktop installation, Maven build, Dockerfile creation, IDEA integration, container testing, and final deployment to a Linux server.
This article explains the fundamentals of MySQL indexes, compares them to a library catalog, details various index types and their physical implementations, demonstrates how indexes dramatically speed up queries on large tables, and provides practical SQL syntax for creating and managing indexes.
This article provides a comprehensive comparison of nine widely used log management tools, detailing their core features, pricing models, advantages, and drawbacks to help readers make informed decisions when selecting a logging solution for their infrastructure.
This article outlines the typical evolution stages of large internet system architectures—from single‑node deployments to cluster, distributed, and future cloud‑native designs—highlighting the business‑driven reasons, technical challenges, and practical tips for each phase.
This article explains the transition from dual‑primary MySQL to a master‑slave read/write split, outlines the pain points of position‑based replication, and demonstrates how GTID simplifies setup, failover, and monitoring of replication lag while ensuring data consistency.
On December 18, 2023, Alibaba Cloud's Hong Kong Region experienced a severe cooling‑system failure that caused a 14‑hour outage of ECS, OSS, EBS, RDS and other services, prompting extensive emergency procedures, service impact analysis, and a detailed post‑mortem with improvement actions.
