Description: The layered pattern is an architectural approach that organizes a system into distinct layers, each with specific and well-defined responsibilities. This pattern allows for the separation of concerns, making software management and maintenance easier. It typically consists of at least three layers: the presentation layer, which handles the user interface; the business logic layer, which contains the business rules and processes; and the data access layer, which manages interaction with databases or storage systems. This modular structure not only improves code readability but also allows for component reuse and more effective unit testing. Additionally, the layered pattern promotes scalability, as each layer can be developed and modified independently, facilitating the incorporation of new functionalities without affecting the entire system. In summary, the layered pattern is fundamental in modern software architecture, providing a solid foundation for the development of complex and robust applications.
History: The layered pattern has its roots in the evolution of software architecture from the 1970s and 1980s, when modular design concepts began to be formalized. As applications became more complex, the need for structures that allowed for better organization and maintenance of code emerged. In the 1990s, with the rise of object-oriented programming and the development of enterprise applications, the layered pattern became established as a standard practice in the software industry.
Uses: The layered pattern is widely used in the development of enterprise applications, content management systems, and web applications. Its modular structure allows development teams to work on different layers simultaneously, speeding up the development process. It is also common in microservices architectures, where each service can represent a specific layer.
Examples: Examples of applications that use the layered pattern include enterprise management systems, web applications built with popular frameworks, and e-commerce platforms, where each layer is responsible for different aspects of the system’s operation.
