Anatomy of the Data Access Contract: Protect Your Domain from Framework Leaks (Chapter 3)
In almost every modern Java textbook, data persistence is introduced with a dangerous shortcut. You are told to create an interface, extend JpaReposit…
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Explain the Concept of "Convention over Configuration" in Spring Boot
If you've ever started a Java project, you probably know how much configuration is usually required. You need to configure XML files, register beans, …
How I Built JWT Authentication in Spring Boot (Beginner-Friendly Guide)
How I Built JWT Authentication in Spring Boot (Beginner-Friendly Guide) Authentication is one of the first things every backend developer learns when …
Why Package Structures Won't Save Your Spring Boot Architecture (And How Maven Enforces It) (Chapter 1)
How We Turned Architectural Guidelines Into Compilation Errors Have you ever found yourself doing a Friday afternoon Code Review, only to discover tha…
Integrating Specmatic Contract Testing into Spring PetClinic REST: What a "Simple" DELETE Test Taught Me About Test Architecture
Introduction Hello, I am Kuruba Ramesh, a Full Stack Developer specialising in the MERN Stack and Java Spring Boot. As part of my ongoing work with th…
Building an AI Agent System with the ReACT Pattern in Java
From answering questions to solving problems — Phase 6 of the Jarvis AI Platform After Phase 5, Jarvis could hear, speak, remember conversations, retr…
Adding Voice to a Java AI Assistant — Whisper, TTS, and the Voice Conversation Loop
How we gave Jarvis the ability to hear and speak — Phase 5 of the Jarvis AI Platform Where We Left Off After Phase 4 , Jarvis could answer questions u…
Why Java Is Still Important and Relevant in 2026
Java has been around for more than 30 years, and every few years someone asks the same question: "Is Java still relevant?" In 2026, the answer is stil…
I Built a Production-Ready Spring Boot 4.1.0 SaaS Boilerplate — Here Is What I Learned
Why I Built This Every Spring Boot project I started, I spent the first 2–3 weeks building the exact same things: JWT authentication Email verificatio…
Stop calling a service that's already down: circuit breakers with Resilience4j
Day 14 of building OrderHub in the open. So far we have a monolith with real persistence, validation, exception handling, OpenAPI docs, a Redis cache,…
How does Spring Boot simplify the development of Java applications?
Introduction Imagine you're assembling a new piece of furniture. One option is to buy every screw, bolt, plank, and tool separately, then spend hours …
Stop Guessing Batch Sizes: High-Performance Bulk Inserts in Spring Boot with PostgreSQL COPY
When you can't afford to guess the right batch size and don't want to pay for that lesson in production When I designed the persistence layer of a rea…
Passwords are not necessary, a Oauth/OIDC approach
Intro It is possible to skip the burden of password management, security, encryption and password rotations. When using OAuth 2.0 with OIDC (OpenID Co…
Show Dev: Self-reinforcing K-pop data pipeline using Spring Boot and pgvector (Built on OCI Free Tier)
Hi everyone, I'm a backend developer based in Seoul. I built k-cosmos, an interactive web-based 3D music space that maps K-pop tracks based on 768-dim…
Spring Boot 3.5 EOL Is Coming June 30: 115 Breaking Changes and Why Solon 4.0 Won't Care
The June 30 Java Wake-Up Call: What Spring Boot 3.5 EOL Means for Your Architecture 账号 : @solonjava (Solon Framework) 用途 : dev.to 第3篇文章（待发布） 定位 : 中立 J…
Spring Boot MCP Server in 2026: The Transport Trap That Wastes Your Weekend
I spent an afternoon staring at "connection refused" on my first MCP server. The fix was one config line. Here's what no README tells you upfront. Wha…
Your @EventListener Fires Before the Transaction Commits⚙️
Your domain event fires. Your notification service queries the DB for the entity that just got saved. It finds nothing. You add a log line. It starts …
Sprout: a Spring-style, Spring-compatible framework for building AI tooling in Java
Your backend already exists. It runs on the JVM, it has services, configuration and tests, and increasingly it needs to do AI things — call a model, e…
Beyond the Cache Miss: Designing Resilient Caching Layers with Redis Degradation Strategies
1. The Anatomy of a Cache Disaster To design a solution, we must first analyze how cache failures manifest as systemic outages. Consider a standard re…
Spring Boot 3.2 + Testcontainers: Reliable Integration Testing with Real Dependencies
Spring Boot 3.2 + Testcontainers: Reliable Integration Testing with Real Dependencies Without Testcontainers, your integration tests might pass locall…
Spring AI: The Senior Dev's Honest Take on Java's AI Moment
TL;DR Spring AI is an official Spring project that integrates AI models into Java using familiar patterns: auto-configuration, dependency injection, a…
System Prompt Leakage vs Prompt Injection in Spring Boot AI
System Prompt Leakage vs Prompt Injection Spring Boot AI You've wired up a Spring Boot service to an LLM, added a SystemMessage with confidential busi…
Securing Your Spring Boot Architecture: A Pragmatic Approach with Clprolf
Introduction Spring Boot is an incredible framework. It gives developers immense freedom to build and scale applications quickly. However, in large te…
Deep Dive into the Spring IoC Container: Unmasking BeanFactory and ApplicationContext
Why Every Spring Boot Developer Must Understand the IoC Container In the modern era of software development, abstracting away complexity has never bee…
What is the Purpose of the @Autowired Annotation in Spring Boot?
Learn what the @Autowired annotation in Spring Boot is, how dependency injection works, practical examples, best practices, and common mistakes to avo…
Google Authenticator integration with Spring Boot
Google Authenticator Integration with Spring Boot Passwords alone just don't cut it anymore. We've all seen the headlines — data breaches, credential …
How I Learned Unit Testing in Spring Boot by Building One Simple Project
When I first started learning Spring Boot, I constantly heard senior developers talking about unit testing, JUnit, Mockito, and Test-Driven Developmen…
Applying Checkov to Terraform as Code – A TFSEC Alternative
Static Application Security Testing (SAST) is a critical practice in modern DevSecOps. While tools like SonarQube, Snyk, and Veracode are popular, thi…
Understanding Hibernate ddl-auto in Spring Boot: When to Use create, update, validate, and none
Choosing the wrong spring.jpa.hibernate.ddl-auto setting can lead to unexpected schema changes or even data loss. In this guide, you'll learn what eac…
The Zero-Drift API Series: Stop Trusting a Green Build You Can't Explain
The Zero-Drift API Series Stop Trusting a Green Build You Can't Explain There is a specific kind of production incident that hurts more than the other…