hendelsesdrevne

Hendelsesdrevne refers to a programming paradigm or architectural style where the flow of the system is determined by a sequence of events. Instead of a program executing a predefined set of steps in order, it waits for events to occur and then reacts to them. These events can originate from various sources, such as user interactions (e.g., a button click), sensor readings, messages from other systems, or internal timers.

In an event-driven architecture, components of a system communicate through events. When an event occurs, it is published to a system, and other components that have subscribed to that specific event type are notified. These subscribed components then execute their predefined logic in response to the event. This approach promotes loose coupling between system components, as they don't need direct knowledge of each other's internal workings.

This paradigm is widely used in modern software development, particularly in areas like user interface programming, web applications, real-time systems, and microservices. Its asynchronous nature allows for greater responsiveness and scalability, as the system can handle multiple events concurrently without blocking. Common examples include graphical user interfaces where button clicks trigger actions, or serverless computing platforms that execute functions in response to specific events like file uploads or database changes. The core principle is that the system's state changes and actions are initiated by discrete occurrences.