"Over the years, each time I have had an opportunity to see the impact of adding a new layer of error detection, the result has been the same. It fires fast and

"Over the years, each time I have had an opportunity to see the impact of adding a new layer of error detection, the result has been the same. It fires fast and it fires frequently." This deserves quoting. Note that, as it says in the bio, James Hamilton is a Vice President and Distinguished Engineer on the Amazon Web Services team.