We have introduced rate limiting for non-production Projects. This means the API now returns an error when your API client sends too many requests in a short time. The error response includes headers with details about the current rate limit and the time when the client can retry the request. Before, the platform returned 503 errors with no indication when to retry the request. Exponential backoff was the suggested retry strategy for this case.

Please contact support to schedule your load tests to ensure they are not rate-limited.