Sharing Java developer knowledge, practical articles, and continuous insights into computer engineering.
This article explains Git’s true decentralized architecture, details how repositories store snapshots, shows step‑by‑step how to create a private bare Git server, configure SSH keys for multiple accounts, and automate deployment with hooks and CI/CD scripts.
This article walks through creating a self‑hosted object storage solution by configuring Nginx for static file serving, implementing secure downloads with X‑Accel‑Redirect and signed URLs, and deploying MinIO as an S3‑compatible service, complete with Spring Boot integration and sample code.
This article explains the fundamentals of Java NIO, showing how to use Channels and ByteBuffer to efficiently read, write, and manipulate large files, including memory‑mapped files and RandomAccessFile alternatives, with clear code examples and step‑by‑step guidance.
This article explains the fundamentals of Java I/O streams, showing how to efficiently read, write, copy, delete, move, and inspect both text and binary files using NIO, Buffered streams, and modern APIs, while providing ready‑to‑use code examples.
The article explains how Maven's default resource filtering corrupts binary .p12 certificates during packaging, causing Spring Boot startup failures, and provides a step‑by‑step solution using dual resource configurations and best practices for handling binary files in Java backend projects.
This article walks through the differences between plain HTTP, HTTPS one‑way authentication, and mutual TLS, detailing the TCP handshake, TLS handshakes, certificate creation, file‑type conventions, and practical security considerations for developers and engineers.
This article walks you through practical Nginx configurations covering reverse‑proxy load balancing, static resource handling, cache control, version hiding, JSON‑formatted logging, rate‑limiting, IP restrictions, gray‑release traffic splitting, security headers and DNS anti‑spoofing, with ready‑to‑use code examples.
This guide walks you through installing and configuring Nginx on CentOS, Docker, and macOS, explains core concepts like event‑driven architecture, compares Nginx with Tomcat, and clarifies the roles of traffic gateways, API gateways, and service registries, providing practical commands and Q&A for developers.
This article introduces the five most common Reactor error‑handling operators—onErrorReturn, onErrorResume, doOnError, retry, and blockOptional—explains their distinct behaviors, appropriate scenarios, and common pitfalls, and provides concise code examples for each within Spring WebFlux.
This article, part of an async‑programming series, explains how Spring WebFlux’s non‑blocking Mono model can replace traditional Spring MVC blocking calls, presents common business scenarios, provides ready‑to‑use code templates, and demonstrates the performance benefits of reactive programming for high‑throughput Java backends.
