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The Magic Line That Raises the Right Question Spring Data JPA is a library that lets you...


A concurrency bug that lost 85% of balance updates under load, and the optimistic-locking + bounded-...


Spring AI 2.0.0-M6 dropped on May 8, 2026. Buried in the release notes was the thing I had been...


One good parcel event, one bad parcel event, one batch. That was enough to lose the good one. The co...


Retries are one of those features that almost every distributed system eventually gets. Downstream....


Every 'build an AI agent' tutorial assumes Python and a paid key. Here's how to run a real LLM agent...


I'm a self-taught developer from Sri Lanka. No bootcamp, no CS degree — just months of building,...


**The Wrong Approach Most applications follow this flow:** User Query ↓ LLM Request ...


🔁 Kafka sem duplicação – 3 padrões? Não, 2 bastam! (os que realmente funcionam) E aí,...


Why Java + Spring Boot is Still the King of Enterprise Backend (2026) After 13 years...


How AgentFlow4J v0.7.0 stops your agent from burning money on the wrong retries and the wrong model.


Introduction One of the most consequential decisions in microservices architecture is data...


The local API started cleanly. Running on http://127.0.0.1:3001 Press CTRL+C to quit Enter...


If you work in backend engineering long enough, you eventually realize something important: Most...


REST developers exploring GraphQL alternatives


Modern applications often use: • React SPA (Single Page Application) • Spring Boot backend •...


The 401 You Never Wrote: What Spring Security Actually Does Out of the Box Spring Security...


My Struggles as a Software Engineer in 2026 ...


Exact end of life dates for every Spring Boot version — 2.7 through 4.0. OSS and commercial support ...


Common Spring Boot Annotations and Why We Use...


1. What is CORS and why is it required? CORS (Cross-Origin Resource Sharing) is a browser security.....


What is REST API? A REST API (Representational State Transfer Application Programming Interface) i...


Spring Boot Auto-Configuration: The Interview Question That Separates Junior from...


What is API? API stands for Application Programming Interface. It is a bridge that allows two...