Publish-Subscribe Systems

A Publish-Subscribe system is a communication model where producers (publishers) send messages about specific topics, and consumers (subscribers) receive updates only for topics they are interested in. Instead of direct communication, messages are routed through a central broker or server that manages topics and distributes relevant information. This setup allows for efficient, flexible information sharing, as subscribers can stay updated without constantly checking for new data, and publishers don't need to know who their subscribers are. Common uses include news feeds, event notifications, and real-time data updates.