Events
Events are a fundamental programming concept that represent occurrences or signals in a system, often used to enable asynchronous, event-driven architectures. They allow components to communicate by triggering actions in response to specific happenings, such as user interactions, data changes, or system notifications. This pattern decouples event producers from consumers, promoting modularity and scalability in applications.
Developers should learn events to build responsive, non-blocking applications, particularly in user interfaces, real-time systems, and distributed architectures. They are essential for handling user inputs (e.g., clicks, keypresses), managing state changes in frameworks like React or Angular, and implementing pub/sub patterns in backend services. Events help avoid tight coupling and improve maintainability by enabling loose communication between modules.