Request throttling for the Amazon ECS API

there isn't a direct API call that provides the current state capacity (used/available) or the current throttle status for the Amazon ECS API. The Amazon ECS API has a default rate limit, and exceeding it results in a "RequestLimitExceeded" error, which you can monitor through Amazon CloudWatch.

if you needed, you can estimate and manage your API usage by following

• Cache API responses
• if your application requires higher rate limits, you can request a limit increase by contacting AWS Support.
• Implement an exponential backoff algorithm with jitter in your applications that make API calls