Hexagonal Architecture
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Hexagonal architecture is a software architecture model created in 2005 to help isolate domain/business logic from external interfaces and infrastructure. It focuses on separating core domain functions from outside influences like databases, user interfaces, and networking to allow independent development and testing of each layer. Adapters act as intermediaries between the isolated domain/core and external components like databases or web services, allowing for flexibility in how the core interacts with these external elements. Hexagonal architecture can help with high testability, loose coupling between layers, and scalability by allowing external ports to be scaled independently.
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Hexagonal Architecture
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- 2. What is HexagonalArchitecture? Architecture model created by Alistair Cockburn in 2005; Port / Adapter concepts; Architecture focused in isolation; Domain/Core Business centralized; Easy to test isolated components;
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- 4. Adapter Anatomy A portis usually an API; An Adapter knows how to deal with external components;
- 5. Adapter Anatomy We alsocan group adapters per port:
- 6. When should Iuse it? If you need high level test coverage; If you have the necessity to switch components, such as storage; Long way evolutive applications; If your application tend to go to microservices; Need to communicate with manu external components;
- 7. Advantages Isolation; Testability; Multiple implementations; Less coupling; Nologic mixing; Scalability, as far as I can scale the ports (in format of API);
- 8. Disadvantages Many adapters tendsto generate confusion; Problems inherited from distributed architectures;
- 9. Should I haveonly 6 adapters? It’s hexagonal, but not necessarily 6 sides/ports
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