What model is used by the Streaming API?

The Streaming API in Salesforce utilizes the Publish/Subscribe model, which enables real-time data notifications. In this model, publishers (such as Salesforce services or applications) send messages about data changes to topics, while subscribers (clients) express interest in those topics to receive updates. This approach allows for efficient communication, as subscribers are only notified about the data they care about, rather than polling the server for updates at regular intervals.

This is particularly advantageous in scenarios where timely data visibility is crucial, such as in user dashboards or monitoring applications, allowing clients to react promptly to changes without unnecessary overhead. The versatility and responsiveness of the Publish/Subscribe model make it ideal for applications that need to maintain up-to-date information on events happening within the Salesforce environment.

The other models mentioned, such as Client/Server, Request/Response, and Batch Processing, do not align with the mechanics of the Streaming API, which is focused on real-time and event-driven architectures, highlighting the effectiveness of the Publish/Subscribe methodology in such contexts.