Hexagonal Architecture (Ports and Adapters)

Application

The Business Logic

The business logic (usecases), uses a Driven Port. And this Driven Port is implemented by a Driven Adapter, and the Resources (Driven Side) use this Adapters to communicate with the application.

• Here the Driven Port, could be seen as a Generic Interface.

• This Generic Interface can be implemented by multiple types of Adapters:

  • Like Database adapter.

  • Memory adapter.

  • File adapter.

Also the business logic, implements a Driver Port.

Drivers

What drives the application, it is what consumes.

Driven Actors (Resources)

Is what is consumed by the drivers.

• SMTP Server

• Queue

• File system

• Database

In the application border we will have the application API. This means that the API is not a resource to be consumed.