Enterprise Java
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Resolving the “Validation Failed for Query for Method” Error in Spring Data JPA
This article explains how to diagnose and resolve the error “Validation failed for query for method” in Spring Data JPA.…
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Getting Started with TOON Format in Java
Token-Oriented Object Notation (TOON) is a modern data serialization format designed to represent structured data in a compact, human-readable, and…
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OAuth 2.1 and the Death of Implicit Flow: What Every Java Developer Building Auth Needs to Update
OAuth 2.1 consolidates years of security best practices and formally retires the implicit grant, the resource owner password credentials grant,…
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Running Parallel Instances of Spring Boot Applications in IntelliJ
Running multiple instances of a Spring Boot application can be beneficial for testing interactions, configurations, and resilience patterns. With IntelliJ…
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Apache Seata: Distributed Transaction Management Tutorial
In modern microservices systems, ensuring data consistency across multiple independently deployed services requires a structured approach to distributed transaction management.…
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Spring Boot 404 Redirect to Single Page Application
Single-page application (SPA) such as those built with React, Angular, or Vue handle routing on the client side. When deployed…
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Understanding and Fixing Sonar’s Serialization Warning in Java
When working with Java applications, especially in enterprise environments, static code analysis tools like Sonar often raise warnings related to…
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Ways to Identify Your Apache Tomcat Server Version
Knowing the exact version of your Apache Tomcat server is essential for debugging, ensuring compatibility, applying security patches, and maintaining…
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RAG Architecture on the JVM: Building a Production-Ready Pipeline With LangChain4j
A practical walkthrough of embedding models, vector stores, retrieval strategies, prompt engineering, and evaluation — without leaving the JVM. 1.…
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