PushObjekt

PushObjekt is a concept in software engineering describing an object that propagates state changes to registered observers automatically. It emphasizes push-based delivery of updates rather than consumers polling for changes (pull-based models). In practice, a PushObjekt supports a publish-subscribe interface and serves as a building block for reactive or event-driven designs.

The term is commonly found in German-language programming literature to denote objects that implement push semantics. A PushObjekt typically offers mechanisms to subscribe and unsubscribe observers and to notify them when its state changes. The notification payload may be the new value itself or a structured change event containing details about what changed.

Key characteristics include decoupled communication between the object and its observers, asynchronous or event-driven update delivery, and a lightweight contract for observers. Designers must consider lifecycle management to avoid memory leaks from forgotten or lingering listeners, as well as thread-safety and potential backpressure when updates arrive at high frequency.

Common use cases for PushObjekt include user interface data binding, real-time dashboards, model-view synchronization, and other scenarios that require automatic propagation of changes. It often plays well with related patterns such as the observer pattern, publish-subscribe systems, and broader reactive programming approaches.

Implementation notes: PushObjekt can be realized via traditional observer patterns, event emitters, or reactive frameworks that expose streams or signals. Design choices may cover payload format (value versus event object), error handling, and lifecycle management, as well as how to compose multiple PushObjekte into larger reactive pipelines.

See also: Observer pattern, Publisher–Subscriber, Reactive programming, Observable, Event-driven architecture.