DDD in an "onionshell"
Anastasiia Lysenko
13Chats
Scalable Distributed System
Onion Architecture
DDD with Onion =
Domain Layer
"This layer is the heart of business software"
(Eric Evans)
DDD is definitely NOT about technology. DDD is all about the domain.
Application layer
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Is responsible for the navigation between the UI screens in the bounded context as well as the interaction with application layers of other bounded contexts.
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Can perform the basic (non business related) validation on the user input data before transmitting it to the other (lower) layers of the application.
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Should not contain any business or domain related logic, but definitely should perform tasks from the UI requests via services.
Application layer
Infrastructure Layer
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consists Shared libraries for Domain, Application, and UI layer
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communicates with external systems, such as DB or search engine adapters
Presentation Layer
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presenting information to the user and interpreting user commands
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translate incoming requests to method calls for the application layer
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translate the return values to responses.
Full Picture
Shared Kernel
Anti Corruption Layer (ACL)
Partnership
The End
DDD in an "onionshell"
By Anastasia Lysenko
