For Conversions API Gateway on GCP, its capacity is determined by the event capacity you set. By default, Conversions API Gateway can process up to 100 events per second. You can update this value on the Conversions API Gateway Admin UI after installation.
The auto scaling limits display the current event capacity and the average number of events per second in the last 24 hours. You can update the event capacity using the slider. When you choose a new value and click the "save changes" button, a pop-up window will appear.
It will notify you that increasing the event capacity may result in an increase in fees.
After clicking the confirm button, the event capacity will be updated.
When the number of events per second on your instance exceeds the event capacity you have set, you will see an alert message on this page. The message will show how much the peak event per second is above the event capacity and provide a recommended value to help you choose a new limit.