Dedicated to sharing programmer-architect skills—Java backend, system, microservice, and distributed architectures—to help you become a senior architect.
This guide explains Maven's core plugin architecture, demonstrates practical configurations for flatten‑maven‑plugin and exec‑maven‑plugin, details the MOJO concept behind plugins, and walks through creating, installing, and binding a custom Maven plugin to the build lifecycle.
The article explains how confusing the literal string "null" with a true null value in user registration requests can let invalid accounts slip through validation, leading to downstream errors and highlighting the need for proper input checks.
This article walks through the concepts, architecture, and hands‑on steps for using Apollo, Ctrip’s open‑source distributed configuration center, covering project setup, Spring Boot integration, dynamic updates, clustering, namespaces, high‑availability design, and Kubernetes deployment.
Cloudflare suffered a massive multi‑hour outage that knocked offline popular sites and AI services, traced to a sudden traffic spike, a mis‑configured Rust‑based bot‑management module, and a database permission change that doubled a feature file size, overwhelming its routing software.
This guide explains the fundamental concepts of virtualization, outlines Hyper‑V’s advantages, details system requirements, shows how to enable Hyper‑V via PowerShell, DISM or Windows settings, and provides a complete step‑by‑step process for creating and installing a Windows 11 virtual machine, including screenshots and download links.
This article explains why services must be gracefully shut down before leveraging Spring Event, how startup timing can cause event loss, which consistency scenarios suit or reject publish‑subscribe, and practical reliability techniques such as retries, idempotence, and fault reporting.
To prevent duplicate operations caused by network glitches, user errors, or retries, this article explains four common idempotency strategies—token, database unique index, distributed lock, and request payload hashing—providing clear concepts, key considerations, and ready‑to‑copy Java/Spring code examples.
Yearning is an open‑source, self‑hosted MySQL audit platform that combines AI‑assisted SQL optimization, multi‑level approval workflows, automatic syntax checking, privacy protection, and flexible deployment options to help developers and DBAs secure and manage database operations.
This article details a complete, production‑grade OCR invoice processing pipeline that combines a distributed Spring Boot microservice architecture, deep Tesseract optimizations, ML‑based data validation, GPU acceleration, Kubernetes deployment, and extensive performance and security strategies to achieve million‑scale daily throughput with high accuracy.
This article explains the fundamentals of authentication, authorization, and credentials, compares cookies, sessions, and tokens, introduces JWT structure and usage, discusses common security concerns, and outlines practical solutions for distributed systems and modern web applications.
