Resilience in Amazon API Gateway - Amazon API Gateway
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Resilience in Amazon API Gateway

The Amazon global infrastructure is built around Amazon Regions and Availability Zones. Amazon Regions provide multiple physically separated and isolated Availability Zones, which are connected with low-latency, high-throughput, and highly redundant networking. With Availability Zones, you can design and operate applications and databases that automatically fail over between zones without interruption. Availability Zones are more highly available, fault tolerant, and scalable than traditional single or multiple data center infrastructures.

For more information about Amazon Regions and Availability Zones, see Amazon Global Infrastructure.

To prevent your APIs from being overwhelmed by too many requests, API Gateway throttles requests to your APIs. Specifically, API Gateway sets a limit on a steady-state rate and a burst of request submissions against all APIs in your account. You can configure custom throttling for your APIs. To learn more, see Throttle API requests for better throughput.

You can use Route 53 health checks to control DNS failover from an API Gateway API in a primary region to an API Gateway API in a secondary region. For an example, see Configure custom health checks for DNS failover.