According to SU17 release notes there are the following Daily/Hourly limits for Platform events:
- Maximum number of events published per hour
- Maximum number of events delivered to CometD clients within a 24-hour period
Where can I see the number of consumed vs total allowance for Daily/Hourly limits for Platform Events in my org?
My test:
I created a custom event MyEvent__e in sandbox and launched it via REST API in workbench, also subscribed to the event in workbench (this is a CometD client and counts as DurableStreamingApiConcurrentClients)
I'm checking limits consumption in '/services/data/v43.0/limits' but I don't see any change in numbers apart from DailyApiRequests.
Best Answer
Now with release Winter 21, you have a new feature which enables you to monitor it.
https://developer.salesforce.com/docs/atlas.en-us.change_data_capture.meta/change_data_capture/cdc_monitor_usage.htm
Obtain Usage Metrics for the Last 24 Hours