> RDS maxes out RAM at 768GiB RDS goes 4TB on X1e instance type. But the point is RDBMS systems handle a large amount of data and workload types before needing

> RDS maxes out RAM at 768GiB RDS goes 4TB on X1e instance type. But the point is RDBMS systems handle a large amount of data and workload types before needing to reach for specialist systems I don't know how you are doing write transactions in 5ms on DynamoDB. Single puts p50 maybe, but i've never seen p90 put operations below 10ms.