[mrep]

> I doubt that they actually built this on top of Postgres.

Maybe not (but OP makes a lot of good points for why it is), but it is still based on the aurora limits, 64TB of size, 15 low latency read replicas in minutes, and presumably 1 write capacity which makes it a laughable nosql system since it cannot scale past 1 servers write capacity.

[sorenbs]

Are you aware that they are working on multi-master for Aurora? https://aws.amazon.com/about-aws/whats-new/2017/11/sign-up-f...