Pub/Sub Pattern

The Pub/Sub (Publish/Subscribe) pattern is a messaging system where providers (publishers) send messages about events or data to a central hub (broker). Subscribers register their interest in specific topics. When a message is published, the broker delivers it only to subscribers interested in that topic. This approach decouples senders and receivers, allowing for flexible, scalable communication—much like a newspaper delivering different sections to subscribers based on their preferences. It’s commonly used in systems requiring real-time data updates, ensuring that information reaches the right audience efficiently and independently of how they connect.