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Observer Design Pattern in Java

The Observer design pattern is a behavioral pattern that defines a one-to-many dependency between objects. When one object (the subject) changes state, all its dependent objects (observers) are notifi...

28.04.2025 0 Read More

Bucle for a IntStream con iterate en Java

En el post anterior analizamos la conversión de un simple bucle for a un IntStream, pasando de un estilo imperativo a uno funcional. Ahora veremos cómo abordar bucles que son un poco más complejos,...

28.04.2025 0 Read More

Unlocking the Power of ItemReader in Spring Batch: Are You Using It to Its Full Potential?

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28.04.2025 0 Read More

Leetcode 2302. Count Subarrays With Score Less Than K

Problem Statement The score of an array is defined as the product of its sum and its length.For example, the score of [1, 2, 3, 4, 5] is (1 + 2 + 3 + 4 + 5) * 5 = 75. Given a positive integer...

28.04.2025 0 Read More

LeetCode # 987. Vertical Order Traversal of a Binary Tree

Problem The problem involves taking a binary tree and performing a vertical order traversal. Vertical order traversals have real world applications such as rendering user interfaces,GIS systems and d...

28.04.2025 0 Read More

Padronizando Commits Git com um Script Bash: Uma Solução Simples para um Problema Comum

Índice O que são Commits Semânticos e por que são importantes A origem do problema A solução: um hook Git em Bash Anatomia do script O hook de validação O gerenciador de hooks I...

28.04.2025 0 Read More

Dica Java: @ParameterizedTest #008

Essa é mais uma dica de Testes Unitários!Com mais algumas dicas ~escondidas~!Vamos a um exemplo simples de um endpoint POST com body e algumas validações: ⛶@RestController @RequestMapping("v1/pe...

28.04.2025 0 Read More

Getting Started with Kiponos.io

Kiponos.io is the only configuration management tool working in True Real-Time.Which means any config item you modify online - in your Kiponos dashboard - is instantly changing your application behav...

28.04.2025 0 Read More

"I Don’t Understand Anything I Can’t Build": The Feynman Philosophy of Understanding

Richard P. Feynman—Nobel Laureate, iconoclastic physicist, and master communicator—remains one of the most influential scientific minds of the 20th century. Among the many quips and principles att...

29.04.2025 0 Read More

JWT Security with OAuth

Still relying on usernames & passwords? That’s old-school and risky! 😏 Modern authentication needs to be secure, seamless, and scalable—and that’s exactly what OAuth 2.0 offers. https://m...

29.04.2025 0 Read More

Observer Design Pattern in Java

Bucle for a IntStream con iterate en Java

Unlocking the Power of ItemReader in Spring Batch: Are You Using It to Its Full Potential?

Leetcode 2302. Count Subarrays With Score Less Than K

LeetCode # 987. Vertical Order Traversal of a Binary Tree

Padronizando Commits Git com um Script Bash: Uma Solução Simples para um Problema Comum

Dica Java: @ParameterizedTest #008

Getting Started with Kiponos.io

"I Don’t Understand Anything I Can’t Build": The Feynman Philosophy of Understanding

JWT Security with OAuth

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