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The Event Subscriptions API is an event-driven public interface for subscribing to resource events that have occurred across the CMS. This API removes the need to poll the resource APIs for changes, which is extremely inefficient and can lead to complex implementations.

Also, important events may need to be acted upon as soon as they occur, which can be a problem with a polling approach if the polling interval is too wide - i.e. the event is only as up-to-date as the polling interval. Technologies such as Webhooks, WebSockets, SSEs and gRPC (Server-side streaming) allow messages to be pushed from a server to all subscribed clients immediately.

The Events API will initially allow subscriptions to events for the following resource types:

  • Projects
  • Content Types
  • Components
  • Entries
  • Nodes
  • Users & Groups

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