Spring AI Token Usage: Measure Cost Before You Pick a Model — LLM Cost Control 1/4
Cutting LLM costs in Spring AI starts with two choices: which model answers a request, and what defaults your ChatClient adds to every one it sends. N…
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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…
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…
Service-to-Service Communication in Microservices: What Every Developer Should Know
I still remember the first time a junior dev I was mentoring asked me, "why did the order service just... hang for 30 seconds and then crash the whole…
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…
Kiponos Java SDK 5.0 What’s New — Developer Guide
Kiponos Java SDK 5.0 What’s New — Developer Guide This is the technical companion to the 5.0 milestone announcement: what changed, how modes behave, h…
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…
Stop Rebuilding Exception Handling in Every Spring Boot Project
After working on multiple Spring Boot projects over the years, I noticed an interesting pattern. Every application had different business requirements…
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 …
RAG with Spring Boot — Embeddings and Vector Search Step by Step (2026)
Canonical URL: Republished from munonye.com . Full code on GitHub . Learn how to build a RAG Spring Boot tutorial pipeline that answers questions from…
Deploying Spring Petclinic Microservices with Docker Compose: An End-to-End DevOps Deployment Experience
As part of my DevOps Micro Internship (DMI), I completed the deployment of the Spring Petclinic Microservices application using Docker Compose. This p…
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…
Building Distributed Data Processing with Spring Batch 6 + Spring Boot 4
When people first use Spring Batch, they usually start with a simple single-threaded job. That works for small datasets, but once data volume grows, t…
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 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…
Securing Financial APIs in 2026: Implementing Global Request Interceptors and Automated Audit Trails in Spring Boot
With the recent surge in security vulnerabilities across the Spring ecosystem in the first half of 2026, relying on scattered security validation insi…
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…
How I built a search engine
Hello all, I built a search engine from scratch in Java. In a previous course we were given it as a group project, but since I worked on just the docu…
Deploying Spring PetClinic Microservices on AWS EKS: A Team Story
When our group of 11 was handed the brief for our DMI DevOps Micro-Internship capstone project, the goal was clear: take a real-world microservices ap…
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…
I built a Spring Boot + Angular + JWT Full Stack Starter Kit — here's what I learned
Why I built this Every time I started a new Java full stack project I was spending 2-3 days just on setup — JWT configuration, Spring Security, CORS, …
Deploying Spring Boot to AWS EC2 with Docker and GitHub Actions — The Repeatable Way
Deploying a Spring Boot application to AWS EC2 is straightforward once you've done it. Getting there the first time — and repeating the setup on your …
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…