Multiple API keys and the flow rate limit in the usage plan

Hello:

Usage plan limits are applied per key. Keys within the same plan do not share the limit.

Hope this clarifies.

Regards,
Bob

Thanks for answering.

According to this answer, if multiple clients execute the same API using different API keys, the flow rate can't be limited by the total number of requests to the API, right?
I want to realize a per-API flow rate limit instead of a per-client flow rate limit.

It seems now we can throttle by endpoint: https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api-throttling.html

Route-level throttling You can set route-level throttling to override the account-level request throttling limits for a specific stage or for individual routes in your API. The default route throttling limits can't exceed account-level rate limits.