Programming Tutorials

Scaling ArchUnit with Nebula ArchRules (10 min)🏛️ https://netflixtechblog.com/scaling-archunit-with-nebula-archrules-b4642c464c5a

Single-module Appium frameworks work great — until a second team needs to use them. It starts small. A shared utility gets copy-pasted into another r

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Building a Vector Database with Spring Boot Tutorial A comprehensive guide to creating a vector database using Spring Boot, covering key c

Notes from your fellow Engineer.. A few months ago, I was treating Generative AI the same way many backend engineers probably still are. Interesti

Many string problems look complicated because they involve: substrings repeated characters dynamic conditions Beginners often use nested loops…

This project showcases a reusable room-based multiplayer system built with Java WebSockets, developed through ongoing work on real-time multiplayer ar

Before Getting into development straight away. We must learn the origin the customs and the way of Java Right from the start. We must start first wit

If you have ever integrated Spring Security into an enterprise application, you know it feels like magic—until a random 401 Unauthorized or 403 Forbid

Some Important String Methods in Java: length() - Returns the length of the string. EX: String name = "Ajmal"; System.out.println(name.length())

Java is one of the most widely used programming languages for building robust, scalable, and platform-independent applications. A Java Development G

Introduction In Java, a String is used to store text data. Example: String name = "Jay"; Here "Jay" is a String. Strings are one of the mo

This article was originally published on Jo4 Blog. You deleted the URL. Redis says it's gone. The database confirms it. But users click the link an

I built a Spring Boot 3.2+ open-source library that lets you declare and manage external API channels entirely from YAML. It started in th

String is an object that represents a sequence of characters. Unlike some other languages where strings are primitive types or arrays of characters, J

RAG Retrieval Augmented Generation with Java Spring Boot A technical guide to implementing RAG retrieval augmented generation using Java S

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In the last article I went through what breaks when you obfuscate Java code before sending it to an AI assistant — Spring Data, JPA, Lombok, the whole

This Spring Boot file upload performance test started with a simple question: How far can a Spring Boot file service go under realistic mixed file t

Problem and Motivation After years away, I decided to return to my favorite programming language: Java. My main goal was to deepen my under