What does "push" mean in the context of server communication?

In the context of server communication, "push" refers specifically to the process where the server sends updates to the client without the client having to request them. This mechanism is vital in scenarios where real-time data updates are essential, such as in messaging apps, stock market updates, or live news feeds.

The key aspect of push communication is the proactive nature of the server's actions. The server determines when new information is available and sends it directly to the client. This is in contrast to a request-response model, where the client must initiate communication to receive updates. Understanding this concept is crucial for developers who want to implement real-time features in their applications or services. It enables a more dynamic interaction with users by keeping them informed of changes as they happen, rather than requiring them to constantly check for updates.