[bluejekyll]

As you state, it completely depends on your use case. I'm on a team right now where we are working on a high throughput and high scale system in Java writing to Cassandra. Our ingest requests with writes are 350us.

Honestly it blew me away that we hit that number, but now that we have, 20us could, though generally will not, effect our overall numbers (there are other components in the system that are not this fast).

While I agree with you that this is generally not an issue, in some circumstances, it will be noticeable.