Ask HN: What DB should I use for a web service which will serve around 5B rows?

What DB should I use for a web service serving 5B rows of data? The data is queried using UUIDs.

The data keeps on growing at around 500k per week and is receiving around 800 queries per second.

Management wants to put it all to AWS. I need help. Any recommendations? I'd really appreicate it. Thanks in advance.