> Why is downtime acceptable? At least where I'm working downtime is acceptable because our customer base is composed of professionals in north america that wo

> Why is downtime acceptable? At least where I'm working downtime is acceptable because our customer base is composed of professionals in north america that work 9-5 thus taking the DB offline for five minutes at midnight PST has essentially no cost to our client base. To contrast that, spending three months developing a rollout plan costs our company dearly in competitive advantage. I agree that it's always worth examining from both sides but I also think that 0 downtime migration is both a shiny interesting problem and a point of pride for developers that can cause a company to vastly over invest in a complex technical solution to a problem they never had.