Reference

Platform Event Allocations
Learn about the allocations available for platform event definitions, publishing and subscribing to platform events, and event delivery in CometD and Pub/Sub API clients, empApi Lightning components, and event relays.

EventBusSubscriber
Represents a trigger, process, or flow that’s subscribed to a platform event or a change data capture event. Doesn’t include CometD subscribers.

EventBus Class
Contains methods for publishing platform events.

Platform Event Error Status Codes
When publishing an event message results in an error, a status code is returned in the SaveResult.

TriggerContext Class
Provides information about the platform event or change event trigger that’s currently executing, such as how many times the trigger was retried due to the EventBus.RetryableException. Also, provides a method to resume trigger executions.

Standard Platform Event Objects
Check out the standard platform events that Salesforce publishes.

Platform Events Developer Guide

See Also