Principles
Explore the core principles of hexagonal architecture in Domain Driven Design, including SOLID concepts. Understand how to achieve clear separation of responsibilities, well-defined layer boundaries, and cohesive communication flow from external to internal components. This lesson helps you design components that are easier to maintain and extend in complex systems.
Hexagonal architecture is based on a few principles that should be followed to build well-structured components. If we overlook any of them, we will experience problems in the future. Additionally, it can be quite tortuous to change bad implementations, especially in a system that runs on production.
SOLID principles
To implement components based on hexagonal architecture, it is necessary to understand the SOLID principles, which are as follows:
- The single-responsibility principle: This principle states that a class should only change due to one reason. The class should