Java
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Spring Boot 4 Migration: Breaking Changes, New Defaults,and What Actually Broke
Spring Boot 4 dropped in November 2025 alongside Spring Framework 7.0. It is the most significant release since the jump…
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Building Read-Write Database Routing in Spring Boot with JPA
Enterprise applications often require the separation of database workloads to improve performance and scalability. Read operations can be directed to…
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MCP for Java Developers: A Practical Tutorial With Spring AI and the MCP Java SDK
The Model Context Protocol finally gives Java a universal plug for AI. Here is how to wire up your first…
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eBPF for Java Developers: What It Is, Why It’s Revolutionizing Observability, and How It Affects Your JVM Profiling
The technology reshaping how async-profiler and JFR see your code — explained without the kernel jargon. If you have spent…
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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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Prompt Engineering Is Not Enough: How Java Developers Should Structure AI Agent Workflows Using Embabel or Koog
Goal-oriented planning, tool registration, and multi-step task execution — finally, on the JVM. 1. The Problem With Prompt-Only Thinking If…
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Java 25 vs Java 21: The Upgrade Guide Nobody Has Written Yet
A practical, decision-driven comparison for enterprise teams on Java 21 — covering the three changes that actually matter for production.…
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Compact Object Headers: The Invisible JDK 25 FeatureWith the Biggest Memory Impact
How four saved bytes per object can quietly transform your entire heap — and why you don’t have to change…
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