Platform Events (Beta) Developer Guide

Delivering Custom Notifications with Platform Events (Beta)
Defining Your Platform Event
Publish Platform Events
Subscribing to Platform Events
Platform Event API Considerations and Testing
Reference
Platform Event Limits
EventBusSubscriber
EventBus Class
TriggerContext Class
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Platform Event Limits

The following limits apply to publishing platform events, event delivery in CometD clients, and platform event definitions.

Description Performance and Unlimited Editions Enterprise Edition All other editions
Maximum number of events published per hour

(Events can be published using Apex or APIs.)

 100,000 100,000 1,000
Maximum number of events delivered to CometD clients within a 24–hour period 250,000 100,000 10,000
Maximum number of platform event definitions that can be created in an org 100 50 5

If your application exceeds these limits, or you have scenarios that require creating and publishing more events, contact Salesforce to request a higher limit.