Pub/Sub
Pub/Sub (Publish/Subscribe) is a messaging pattern where senders (publishers) distribute messages to receivers (subscribers) without specifying individual recipients. It decouples components in distributed systems by allowing publishers to send messages to topics or channels, and subscribers to receive only the messages they are interested in. This enables scalable, asynchronous communication in applications like real-time data streaming, event-driven architectures, and microservices.
Developers should learn Pub/Sub when building systems that require loose coupling, high scalability, or real-time data processing, such as in microservices architectures, IoT applications, or financial trading platforms. It is particularly useful for handling high-volume event streams, enabling components to react to changes without direct dependencies, which improves resilience and maintainability.