Explaining how Microservices communicate: sync x async, internal x external, ingress x egress, tools, protocols, and design patterns. — How do microservices communicate? This is a question many developers face when they start working with microservices. The microservices subject is extensive. Also, there is more than one correct answer to this question. We can explore how they communicate (asynchronous/synchronous), the differences between internal and external traffic, and also the…

CDC and Legacy Databases — In the previous article “Microservice databases”, I explained how Microservices differs from SOA on database sharing. How Microservices fit well in Event-driven architecture and the role of CDC tools simplifying data integration during migrations from a Monolith architecture. The article was well-received. It also gave me the opportunity to discuss…

Event-Driven Architecture and CDC — Microservices and SOA Microservices is a trending architecture pattern. If you are a developer or IT professional, you probably have heard or read about microservices. The Microservice principle is simple: create small decoupled components based on their core domains. Many authors consider Microservices a natural evolution of the classical Service Oriented Architecture (SOA)…

Usability, Security, and Privacy — The use of QR Codes for authentication is increasing. The main reason is that it offers a good balance between security and usability. But finding the right balance between these two is difficult! Excessive usability can make users happy but vulnerable. Excessive security can make users safe but irritated. …

Why take the long path if we can take a shortcut? — Many abandon the software engineering field because they find programming too difficult. The choice of the first programming language can determine whether you like the profession or not. “Should I learn Java or Python?” is a very good question. My first programming experience I started programming at a young age. That was in the…

From virtualization to YAML files — As a child, I was never content to just play with my toys. It was a pleasure to take them apart and reassemble them again. It wasn’t about the challenge. It was about finding how things work. As I grew up, in the impossibility of dismantling concepts, the pleasure was…

Why APIs are Important? — “He who has a why to live for can bear almost any how.” — Friedrich Nietzsche Did you know that a company that worth $95 billion is an API company? And the richest man in the world rules an API empire? Knowing what APIs are and how they work is…

Why every dev should know about dockerizing — When new developers join a team it is important to get them accommodated soon. We call the process of integrating new employees “on-boarding”. The onboarding process for developers has some peculiarities. A developer onboarding usually consists of: Get to know the new colleagues and team member Get to know the…

Arquiteturas Orientadas a Eventos e CDC — Microserviços e SOA Microserviços é um padrão arquitetura em asceção. Se você é um desenvolvedor ou profissional de TI deve ter ouvido falar ou lido algo sobre microserviços. O principío dos Microserviços é criar pequenos componentes baseados em seus domínios de negócio. Muitos autores consideram microserviços uma evolução da clássica Arquitetura Orientada a…