The Bus based communication software pattern, also known as Publish/Subscribe, is a pattern that allows sender and receiver entities to communicate without requiring them to explicitly know each other. This communication model suppresses the tight coupling between components and allows the delivery of messages from one receiver to more than one final recipient. There are five different entities involved in the communication pattern: publisher, subscriber, event, bus, and broker.
The publisher submits events to a shared messaging pipeline, named bus, controlled by an entity called broker, that governs the stream of events submitted and forwards them to a list of interested entities, called subscribers, that previously registered in the broker to receive certain kinds of event.
In order to receive certain kinds of event, the subscriber should express interest in these events by creating a subscription in the broker and the broker should keep a list of...
