I've been using DynamoDB in production to power a large API company which handles thousands of requests per second -- we absolutely love it. Our stack is on to

I've been using DynamoDB in production to power a large API company which handles thousands of requests per second -- we absolutely love it. Our stack is on top of EC2, and the DynamoDB read latency is extremely low (1ms -> 10ms per read) -- using it as a data store means you don't even need a caching layer (memcached, etc.) since it's equally as fast, and all data is persistent (and you have no room limits). I'd highly recommend it to anyone. Also: if you're using Python, the dynamodb-mapper library is a great (stable) tool for working with DynamoDB.