Spring Security + Keycloak – JWT Validation Overview Keycloak issues signed JWT access tokens and your Spring Boot services validate those tokens locally using...
Project Overview After a pause, I returned to a personal project that I consider the most important in my portfolio: a digital menu system for restaurants. The...
Problem Link: https://leetcode.com/problems/h-index/ Solution java class Solution { public int hIndexint citations { int n = citations.length; int arr = new int...
Narrative I never expected building this feature to be so crazy to me. While building the feature, everything was going smoothly—until the function started to...
Article URL: https://questdb.com/blog/async-profiler-kernel-bug/ Comments URL: https://news.ycombinator.com/item?id=46280465 Points: 16 Comments: 4...
Introduction The N+1 problem is one of the most common causes of high database load in Spring Boot applications. In this article, I’ll show you how to systemat...
What is method overriding When a subclass provides a specific implementation for a method that is already defined in its parent class, it is called method over...
Origins Java was started in 1991 by James Gosling as part of a research initiative called the Green Project. The main objective of this project was to create a...
Features of Stream API - Declarative – Write concise and readable code using functional style. - Lazy Evaluation – Operations are executed only when a terminal...
Introdução “Mas nunca deu problema na minha máquina.” Provavelmente porque sua máquina é x86. Troque para ARM e alguns bugs de concorrência que estavam “dormin...
A Java Virtual Machine JVM é uma das tecnologias mais influentes da computação moderna. Desde seu lançamento em 1995, a JVM tem sido fundamental para o sucesso...
If you’ve been in the Spring ecosystem for more than a few years, RestTemplate is like an old friend. It’s familiar, it’s synchronous, and—let’s be honest—it ju...
