Blog Index (A–Z)

A message broker is middleware that routes, stores, and delivers messages between independent parts of a system (services, apps, devices). Instead of services calling each other directly, they…

Separation of Concerns (SoC) is a foundational design principle: split your system into parts, where each part focuses on a single, well-defined responsibility. Done well, SoC makes code…

Tight coupling is when one component depends directly on the concrete implementation, lifecycle, and behavior of another. If A changes, B likely must change too. This is the…

Loose coupling is a design principle in software engineering where different components, modules, or services in a system are designed to have minimal dependencies on one another. This…