Errors in a system are correlated with usage but a large part of our jobs as engineers is to reduce that correlation very, very hard. In organizations at even l

Errors in a system are correlated with usage but a large part of our jobs as engineers is to reduce that correlation very, very hard. In organizations at even low scale I’ve had horrible levels of page outs (2-3 per night typical) but it means the system is unsustainable due to burning out workers in the end or that customers simply accept the error rates basically. At sufficiently high team size scales and error rates eventually you run out of hiring people to offset attrition which is what some people are reporting for teams at Amazon and AWS I’ve seen here and there.