Event Bus
An event bus is a messaging system that allows publishers to send events to subscribers. It is a type of publish/subscribe system that is commonly used in event-driven architectures.
In an event bus, events are published to a central message broker, which is responsible for delivering the events to the subscribed clients. Subscribers express interest in receiving events by registering with the event bus and specifying a list of events that they want to receive.
PubSub Model in Python
The publish/subscribe (pub/sub) model is a messaging pattern in which publishers send messages to a message broker, and subscribers express interest in receiving certain messages. The message broker is responsible for delivering the messages to the subscribed clients.
Publishers provide messages to a message broker using the publish/subscribe (pub/sub) model, and subscribers indicate their interest in receiving particular messages. Delivering the messages to the clients who have subscribed is the responsibility of the message broker.
Publishers and subscribers are separated in the pub/sub paradigm, so they can communicate without being aware of one another’s existence. Because publishers and subscribers can be added or removed without affecting others, this enables a more flexible and scalable system.
Message queues, event buses, and topic-based publish/subscribe systems are just a few of the technologies that can be used to construct pub/sub systems. They are frequently employed in event-driven, distributed, and microservices designs.
In this tutorial, we are going to learn by example, how to implement pub/sub in Python.