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 guide explains why accidental database deletion is a critical risk, outlines permission and audit measures, and provides detailed MySQL and file backup solutions—including encryption, multi‑site storage, cron scheduling, and ready‑to‑run Bash scripts—to ensure data safety and system stability.
This guide explains how to install Jenkins, Java, Maven, and Git in an offline Linux environment, covering required dependencies, downloading and installing packages, configuring tools, adding plugins, handling common errors, and finalizing the Jenkins setup for continuous integration pipelines.
This article explains the essential conditions, metrics, and scenario classifications for building high‑concurrency systems, then details common solutions such as database read/write separation, local and distributed caching, cache‑eviction policies, handling master‑slave lag, preventing cache penetration and avalanche, and applying CQRS to achieve scalable, high‑performance back‑end services.
This article explains why message queues are needed, outlines RabbitMQ's architecture, describes its basic concepts and working modes such as simple, work, fanout, direct and topic, and discusses reliability features like transactions, confirms, dead‑letter queues, TTL, clustering, ordering, and handling message backlogs.
On April 8, a Tencent Cloud API outage caused console login failures for nearly 2,000 customers, affecting several dependent services for 87 minutes, and the detailed root‑cause analysis and subsequent improvement actions are presented to enhance system resilience and change management.
This article explains how to manage Jenkins deployment permissions using RBAC and the Role‑Based Authorization Strategy plugin, covering RBAC fundamentals, plugin installation, creating users, jobs, groups, roles, and assigning permissions to ensure secure and organized pipeline access.
This article provides a comprehensive guide on using Jenkins Pipeline to automate the deployment of Java backend projects, covering pipeline concepts, parameterized builds, code checkout, Maven compilation, JAR packaging, remote uploading, backup, update, and service restart procedures.
The author recounts his early DevOps experiences with continuous integration using TFS, PowerShell, and Azure, reflects on the current undervaluation of DevOps, reviews the “Jenkins 2.x Practical Guide” and highlights sociological insights and practical challenges of adopting CI/CD pipelines.
This article presents a comprehensive view of cloud stability governance from both front‑end and back‑end perspectives, detailing system architecture, micro‑frontend integration, CI/CD deployment pipelines, SLB forwarding and health‑check configurations, monitoring dashboards, UI automation testing, and the resulting operational improvements.
This article explains how to use Jenkins Pipeline to automate the deployment of a Java backend project, covering pipeline basics, parameterized builds, GitLab branch checkout, Maven compilation, JAR packaging, remote file transfer, backup, update, and service restart with Docker Swarm.
