🚀 The Java 25 business case your team still hasn't made
There is a way to cut cloud costs, speed up startup and reduce concurrency bugs all at once, and most Java teams still have not built that argument for their manager. It is not one isolated feature, it is the set of things that Java 25 LTS delivers in one go. Today you walk out with the numbers and the code in hand to make the case for the migration.
The scene is always the same. That planning meeting where someone suggests bumping the Java version, and the manager asks the fairest question in the world: "why migrate now, what is the return?". If your answer is "because it is the new version", you have lost the argument. Let us build an answer that fits on a slide and holds up in production.
🤖 Turn your Spring Boot 4 into an AI tool with 3 annotations
There is a way to expose any Spring Boot 4 service as a tool for an AI agent without writing a single line of infrastructure code, and most Java developers still do not know it has fully arrived. With Spring AI 2.0, three annotations (@McpTool, @McpToolParam and @McpResource) turn an ordinary method into a tool that Claude, ChatGPT or any MCP client can see and call on its own.
In this article we go from zero to a running MCP Server: the starter in the build, the annotated service, the production configuration and the client consuming it. All with code that looks like production, the way senior engineers do it. Let us build it.
🔒 The mistake of running Config Server in a pod with a shared volume
The number one mistake of teams running Spring Cloud Config Server in production today is treating the pod filesystem as if it were theirs alone. Shared volume, basedir cloned by JGit, and a namespace neighbor that swaps the path for a symlink at just the right moment. The result is reading and writing files outside the expected directory.
That scenario became CVE-2026-41002 (CVSS 7.4), disclosed on 2026-05-06 and fixed in Spring Cloud Config 4.3.3 and 5.0.3. It is a TOCTOU flaw, and it lands right on the cloud-native architecture most of us use without a second thought. Let's break down what happens and how to lock it down today.
Spring Boot 4: Why Your REST APIs Started Returning 403
You migrated to Spring Boot 4, deployed to production, and suddenly every POST and PUT started returning 403 Forbidden. GET works fine. Local curl passes. Unit tests are green. But the frontend broke completely, and nobody touched a single line of controller code. You open the logs and there is no stack trace, no business exception, nothing. Just a dry 403 that shows up before the request ever reaches your code.
Relax, it is not a curse. The root cause is not in your code: it is CSRF, now enabled by default in Spring Security 7, which Spring Boot 4 ships with. In this article we will understand why this 403 appears, the difference between the wrong way and the right way to fix it, and how to adjust your security configuration without opening a hole that comes back to haunt you in the next audit.
Your blocking code now scales like reactive in Spring Boot 4
There is a way to multiply your API throughput without rewriting a single line of business code, and most developers have not even noticed it shipped enabled by default. In Spring Boot 4, Virtual Threads are the default behavior on Tomcat and Jetty. That same blocking @RestController you have written since 2018 now holds thousands of concurrent requests on the same hardware.
For years the answer to "how do I scale this" was rewriting everything in WebFlux, with Flux, Mono and a learning curve that pushed half the team away. Spring Boot 4 changes that conversation. In this article you will see, with production code, what actually changes in your project, when the gain is real and when it does not happen.
Kubernetes Infrastructure in Java: How Pulumi Eliminates YAML
There's a way to manage all your Kubernetes infrastructure with real Java code, typed, testable, and Git-versionable. Most Spring Boot teams still don't know the Pulumi Java SDK enables this. No 400-line YAML files. No "works on my machine." Real infrastructure as code.
Spring Boot 4 OTel: traces, metrics and logs in 1 dependency
Most Java developers still configure observability manually — 8 dependencies, a custom logback-spring.xml, and hours of debugging for traces that never show up in the logs. There is a smarter solution: the spring-boot-starter-opentelemetry in Spring Boot 4 delivers distributed traces, OTLP metrics, and correlated logs with 1 dependency and 15 lines of YAML. Learn how to implement enterprise-grade observability in your Java API today.
Maximize sua Eficiência em Java com MapStruct: O Segredo dos Desenvolvedores de Sucesso! 🔍
Você já imaginou poder economizar horas de trabalho tedioso escrevendo código de mapeamento de objetos Java?
Acesso Restrito ou Livre? A Importância dos Modificadores em Java! 🚧🔍
Você já se perguntou como os programadores conseguem controlar o acesso aos elementos em seus códigos Java? Nesta aula, vamos explorar os segredos dos Modificadores de Acesso e os Atributos de Classe em Java, revelando o que está por trás da segurança e organização do seu código. Prepare-se para uma jornada de descoberta enquanto desvendamos esses tópicos essenciais!
AJAX e sua Transformação na Web: Da Troca de XML ao Domínio do JSON 🔄
O AJAX, acrônimo para Asynchronous JavaScript And XML, é uma metodologia de programação que trouxe inovação à web, permitindo a comunicação assíncrona entre o front-end e o back-end de aplicações web. Neste artigo, mergulharemos no mundo do AJAX, explorando seus conceitos, história e evolução para entender como ele potencializou o surgimento da Web 2.0.
POO para Iniciantes: Desmistificando os Conceitos Fundamentais 🧐
Programação Orientada a Objetos (POO) é um paradigma de programação amplamente utilizado que revolucionou a forma como os desenvolvedores criam software. Neste artigo, vamos explorar os princípios essenciais da POO, incluindo o encapsulamento, herança, polimorfismo e abstração. Além disso, discutiremos os benefícios da POO e responderemos às perguntas mais comuns sobre esse tópico.
Mercado de Tecnologia da Informação em 2024: Oportunidades, Tendências e Desafios
📈💻 A área de Tecnologia da Informação (TI) é conhecida por sua constante evolução e demanda por profissionais qualificados. Em 2023, o mercado de TI continua a ser um dos setores mais promissores e aquecidos em termos de oportunidades de carreira. No entanto, profissionais e aspirantes a programadores podem estar se perguntando: a programação ainda vale a pena? Dá dinheiro? Neste guia completo, exploraremos o cenário atual da TI e forneceremos dicas para aqueles que desejam ingressar no mundo dos códigos.
Banco de Dados Relacionais vs. NoSQL: Qual é a Melhor Escolha para o seu Projeto? 🚀
Seja você um desenvolvedor, um entusiasta de tecnologia ou alguém simplesmente interessado em compreender o mundo dos bancos de dados, este guia abrangente irá esclarecer os mistérios dos sistemas de gerenciamento de dados. Vamos explorar as diferenças fundamentais entre bancos de dados relacionais e NoSQL e ajudá-lo a determinar qual deles é a escolha certa para o seu projeto. Prepare-se para mergulhar no universo dos dados! 📊
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