Publish-Subscribe
Publish-Subscribe (Pub/Sub) is a messaging pattern where senders (publishers) distribute messages to receivers (subscribers) without specifying individual recipients. It decouples components by allowing publishers to send messages to channels or topics, and subscribers to receive messages based on their interests. This pattern is widely used in distributed systems, event-driven architectures, and real-time applications for scalable and asynchronous communication.
Developers should learn Pub/Sub when building systems that require loose coupling, scalability, and real-time updates, such as microservices, IoT applications, or chat platforms. It's particularly useful for handling high volumes of events, enabling components to communicate asynchronously without direct dependencies, which improves fault tolerance and system resilience.