Java Arch Sample

Event Driven Sample Archtecture using DDD, CQRS, Hexagonal / Ports and Adapters Pattern :

The Architecture

The HEXAGON

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Adapters

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Ports

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Actors

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Pros and Cons

PROS

1. Testability
2. Maintainability
3. Flexibility
4. Immunity to Technology Evolution
5. Delay Technical Decisions

CONS

1. Complexity
2. Build Process Performance
3. Indirection and Mappings

References

[1] Alistair Cockburn first article about Hexagonal architecture

https://archive.ph/5j2NI#selection-41.0-183.17

[2] Alistair Cockburn Article - Ports And Adapters Architecture

http://wiki.c2.com/?PortsAndAdaptersArchitecture

[3] Juan Manuel Garrido de Paz Article - Ports and Adapters Pattern (Hexagonal Architecture)

https://jmgarridopaz.github.io/content/hexagonalarchitecture.html#tc6-2-3

[4] Netflix - Ready for changes with Hexagonal Architecture

https://netflixtechblog.com/ready-for-changes-with-hexagonal-architecture-b315ec967749