NLayer Architecture in abp
2024-10-07 17:51:21
https://aspnetboilerplate.com/Pages/Documents/NLayer-Architecture
Introduction
The layering of an application's codebase is a widely accepted technique to help reduce complexity and to improve code reusability. To achieve a layered architecture, ASP.NET Boilerplate follows the principles of Domain Driven Design.
Domain Driven Design Layers
There are four fundamental layers in Domain Driven Design (DDD):
- Presentation Layer: Provides an interface to the user. Uses the Application Layer to achieve user interactions.
- Application Layer: Mediates between the Presentation and Domain Layers. Orchestrates business objects to perform specific application tasks.
- Domain Layer: Includes business objects and their rules. This is the heart of the application.
- Infrastructure Layer: Provides generic technical capabilities that support higher layers mostly using 3rd-party libraries.
https://abp.io/documents/abp/latest/Domain-Driven-Design
What is DDD?
ABP framework provides an infrastructure to make DDD based development easier to implement.
DDD is defined in the Wikipedia as below:
Domain-driven design (DDD) is an approach to software development for complex needs by connecting the implementation to an evolving model. The premise of domain-driven design is the following:
- Placing the project's primary focus on the core domain and domain logic;
- Basing complex designs on a model of the domain;
- Initiating a creative collaboration between technical and domain experts to iteratively refine a conceptual model that addresses particular domain problems.
Layers
ABP follows DDD principles and patterns to achieve a layered application model which consists of four fundamental layers:
- Presentation Layer: Provides an interface to the user. Uses the Application Layer to achieve user interactions.
- Application Layer: Mediates between the Presentation and Domain Layers. Orchestrates business objects to perform specific application tasks. Implements use cases as the application logic.
- Domain Layer: Includes business objects and their business rules. This is the heart of the application.
- Infrastructure Layer: Provides generic technical capabilities that support higher layers mostly using 3rd-party libraries.
Contents
- Domain Layer
- Entities & Aggregate Roots
- Value Objects
- Repositories
- Domain Services
- Specifications
- Application Layer
- Application Services
- Data Transfer Objects (DTOs)
- Unit of Work
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