INTRODUCTION
In enterprise software development, application architecture is critical to ensuring that the system is scalable, maintainable, and capable of handling business complexity.
WHAT IS LAYERED ARCHITECTURE
The Layered Architecture divides the application into logical levels or layers, each one with a specific responsibility:
1.- Presentation Layer: Interacts with the user and sends requests to the business logic layer.
2.- Business Logic Layer: Contains the core business logic and communicates with the data access layer.
3.- Data Access Layer: Handles data persistence operations, such as database queries.
4.- Infrastructure Layer: Provides general services such as sending emails or authentication management.
CODE EXAMPLE
Below is a simplified example of an order management application using the layered architecture, developed in C#.
Presentation Layer
The presentation layer could be implemented in an ASP.NET MVC controller:
Here, OrderController receives the user's request to create a new order. The controller validates the model, delegates the creation of the order to the business logic layer, and then redirects the user to a success view.
CONCLUSION
The presentation layer manages the interaction with the user, delegating the logic to lower layers. This ensures a clear separation of responsibilities, facilitating maintenance and scalability of the system.
Top comments (1)
Using a layered architecture not only promotes scalability and maintainability, but also promotes high cohesion within each layer and low coupling between them. This allows each layer to evolve independently without affecting the others, facilitating the development and incorporation of new functionalities. In addition, by keeping the responsibility of each layer well defined, the complexity of the system is reduced, which improves its long-term maintainability, something critical in business applications that are often constantly changing and growing.