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Intro
Layered architecture, also known as the n-tier architecture pattern, is a software design approach that separates an application into distinct layers, each with a specific purpose and set of responsibilities. This pattern is widely used in enterprise-level software development, and it has proven to be a powerful tool for creating large, complex systems that are easy to maintain and evolve over time.
Software Architecture Patterns (Mark Richards)
Advantages
The main advantage of using a layered architecture is that it promotes separation of concerns and modularity in the code. By separating the application into distinct layers, developers can focus on specific areas of the system without worrying about the implementation details of other layers. This makes the code more reusable and easier to understand, and it also facilitates testing and maintenance.
Another advantage of layered architecture is that it allows for flexibility and scalability in the system. Because the different layers are decoupled from each other, it is easy to make changes or add new functionality to one layer without affecting the others. Additionally, different layers can be scaled independently, allowing the system to handle a high volume of traffic or data without performance issues.
Disadvantages
The main disadvantage of using a layered architecture is that it can add complexity to the system. Because the different layers are decoupled, communication between them can be challenging, and it requires careful planning and coordination. Additionally, it can be difficult to design the layers in a way that ensures that they are loosely coupled and don't end up creating dependencies between them.
Wrap up
In conclusion, the Layered architecture pattern is a powerful tool for building large, complex software systems. It promotes separation of concerns, modularity, flexibility, and scalability. However, it also requires careful planning and coordination and can add complexity to the system. Layered architecture is suitable for enterprise-level software development, and it's good to use in systems that require high scalability and maintainability.
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