> Somehow this sounds very expensive to me (like restarting Windows 2000 every hour just to avoid a BSoD, except that here it’s not that time consuming a proces

> Somehow this sounds very expensive to me (like restarting Windows 2000 every hour just to avoid a BSoD, except that here it’s not that time consuming a process) The crucial difference is that the activation cost of booting up a full OS (like Windows 2000) is massive (typically involving a chain-reaction of CPU and IO-intensive init services), whereas that is not the case for our serverless infrastructure. What you do point out is one of the most important engineering challenges we had to solve (and continue to be focused on).