The following usage quotas and limits apply to Eventarc when used with supported event receivers.
Eventarc uses Pub/Sub push subscriptions which are subject to throughput limits per publish region.
Resource limits
The number of Eventarc resources is limited for a given project. There is no direct limit on the size of the Eventarc API request.
| Resource | Description | Limit | Can be increased | Scope |
|---|---|---|---|---|
| Trigger | Maximum number of triggers | 500 | No | Per location per project |
| Event | Event size | 512 KB | No | N/A |
Quota rate limits
| Quota | Description | Limit | Can be increased | Scope |
|---|---|---|---|---|
| Published Events (Third-party + Custom Events) | The number of third-party or custom events that can be published per project across all channels | 300 | No. To request an exception, contact support. | Per project |
| Trigger read requests | The number of Eventarc Trigger API reads per minute per project | 6000 | Yes | Per project |
| Trigger write requests | The number of Eventarc Trigger API writes per minute per project | 600 | Yes. The global location has a write limit of 10 QPS. | Per project |
How to increase quota
To increase quotas above the defaults listed on this page:
Go to the Eventarc Quotas page.
Select the quota(s) you want to modify and click EDIT QUOTAS.
If prompted, provide your user information, and enter the new quota limit for each quota you selected.