The Zero-Drift API Series: Stop Trusting a Green Build You Can't Explain
The Zero-Drift API Series Stop Trusting a Green Build You Can't Explain There is a specific kind of production incident that hurts more than the other…
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Rest Template - API for developers- Spring Boot
RestTemplate is a synchronous Spring Framework client used to consume RESTful web services by simplifying HTTP communication. Synchronous Communicatio…
GraphQL with Spring Boot: A Hands-On Tutorial for REST Developers
Published 2026-05-28 by Shubham Bhati — Backend Engineer (Java 17, Spring Boot, Microservices). As backend engineers, we've all been there - stuck wit…
API
What is API? API stands for Application Programming Interface. It is a bridge that allows two applications to communicate and exchange data with each …
Why Java + Spring Boot is Still the King of Enterprise Backend (2026)
Why Java + Spring Boot is Still the King of Enterprise Backend (2026) After 13 years building enterprise systems across PayPal, Salesforce, and NCR, I…
Spring Boot Auto-Configuration Source Code: Nail This Interview Question
Spring Boot Auto-Configuration: The Interview Question That Separates Junior from Senior After thousands of interview communications, one pattern is c…
Spring boot Interview Questions
1. What is CORS and why is it required? CORS (Cross-Origin Resource Sharing) is a browser security mechanism that allows/restricts APIs from being acc…
Spring AI Explained — ChatClient, RAG, Advisors, and Every Core Component
Most Spring AI tutorials jump straight to code. You copy the dependency, paste the config, call ChatClient, and something works. But when you need to …
Spring Boot 2026: Why Measuring Only Startup Time Is a Trap
There's a question that surfaces every time someone mentions GraalVM or Spring AOT in a technical meeting: how long does it take to start? It's the fi…
Why AOP Feels Magical in Spring Boot — And Why Developers Stopped Talking About It
I recently found myself thinking about AOP while working with Spring Boot. Most developers use it indirectly every day, but somehow it stopped being a…
Stop Writing Webhook Boilerplate in Spring Boot
If you've ever needed to send outgoing webhooks from a Spring Boot application, you know the drill. You wire up an HTTP client, implement HMAC signing…
Idempotency4j - Java/Spring Boot idempotency library
The last couple of months, I ended up implementing idempotency in 2 different Spring Boot projects back to back. As I was implementing it in the secon…
Spring Boot JWT Authentication: The Complete Setup Most Tutorials Get Wrong
I've read probably forty Spring Boot JWT tutorials over the years. They all show you the same thing: how to generate a token on login, how to validate…
From 0 to Production in 48 Hours: Architecting SmartPager
There’s a famous saying in engineering: "Fast, Cheap, or Reliable. Pick two." But when you enter a 48-hour hackathon to build a distributed incident m…
When Your Full-Stack Framework Gets Deprecated — Planning an OSS Migration from Hilla
The Bad News Every developer dreads the moment: the framework you built your application on is being discontinued. That's exactly what happened to us …
Testing Sagas with Real Failure Scenarios
In the previous post, I walked through the compensation logic in each service. The code looks clean on paper. But sagas have a lot of moving parts, an…
I Built an AI Agent in Java (No Python. No Hype. Just Code.)
Everyone told me I needed Python for AI. I didn't listen. Here's what happened. Let me be real with you. Every time I say "I'm building an AI agent," …