The State Design Pattern is a behavioral design pattern that allows an object to change its behavior when its internal state changes. It was introduced in the famous “Gang of Four” book titled “Design Patterns: Elements of Reusable Object-Oriented Software“. By the end of this article, you will have a

In this article, we explore the Hexagonal Architecture, as outlined by Alistair Cockburn in 2005, commonly referred to as the ports and adapters pattern. I will explain from a theoretical standpoint but also offer a concrete example that I’ve shared on GitHub. At the end, we will compare the

This article is a transcription of my video on the Clean Architecture by Robert C. Martin. It is part of a series of videos where we analyze some of the most popular architecture styles such as the Onion Architecture and the Hexagonal Architecture. Let’s get started! Clean Architecture Motivation

Whether you are a junior or senior developer, it can be difficult to understand what the hexagonal, clean, or onion architectures are. But, most importantly, it’s difficult to figure out how to use them when coding a real application. In this video, we will start by demystifying the concepts

Event Sourcing and CQRS are possibly the most fascinating architectural patterns in the software world, especially when combined with an event-driven architecture (EDA). In this article, we explain both patterns highlighting advantages and disadvantages of these approaches. In the conclusion, I will give you my personal opinion on whether these

In this article, I cover the “Backend for Frontend” pattern mentioned by Sam Newman in his “Building Microservices” book. You can also find the same content in video format on my YouTube channel. Introduction There are times when the typical general-purpose API backed by a microservice is not enough to

Stop making microservices the goal of your architecture. There’s nothing more complex to build and operate than a distributed system. That’s why we really need to have good reasons to adopt a “microservices architecture”. If you search the web for advantages of microservices, you’ll find this list.