Publish-Subscribe Patterns

The Publish-Subscribe pattern is a communication method used in software and systems, where different components can share information without needing to know about each other directly. In this model, a "publisher" sends messages (or events) to a central channel, while "subscribers" express interest in specific topics. When the publisher sends out a message, only the subscribers interested in that topic receive it. This decouples the sender and receiver, allowing for greater flexibility, scalability, and ease of modifying systems, much like how you can choose to follow certain news topics without knowing the individual journalists.