Feladatkohézió

Feladatkohézió, often translated as task cohesion, is a concept in software engineering that describes the degree to which the elements within a module or component belong together and work towards a single, well-defined purpose. High task cohesion means that a module performs a single, specific function and all its parts are directly related to that function. Conversely, low task cohesion implies that a module handles multiple, unrelated tasks, making it harder to understand, maintain, and reuse.

The principle of high task cohesion is a fundamental aspect of good software design. When a module has high cohesion, it is easier to reason about its behavior, test it effectively, and modify it without introducing unintended side effects. Changes to one module are less likely to impact others if each module has a clear and singular responsibility. This leads to more robust and maintainable software systems.

Achieving high task cohesion often involves breaking down complex functionalities into smaller, more manageable modules, each responsible for a distinct task. This adheres to the principles of modularity and separation of concerns. Developers strive to create modules that do one thing and do it well. For example, a module responsible for user authentication should not also be responsible for generating reports; these would be separate modules with high task cohesion. Poor cohesion, on the other hand, can lead to "god objects" that are overly complex and difficult to manage.