Yeah, it totally blew my mind when I first heard these performance numbers as well. RE "nearly 100 million requests per second": as of Prime Day 2022, it has actually handled >100 Mreq/sec!

>Over the course of Prime Day, these sources made trillions of calls to the DynamoDB API. DynamoDB maintained high availability while delivering single-digit millisecond responses and peaking at 105.2 million requests per second. [0]

[0] https://aws.amazon.com/blogs/aws/amazon-prime-day-2022-aws-f...