In part I was inspired by what I learned about mainframes. I don't know that much about them, but I do know that every single component is hot-swappable and red

In part I was inspired by what I learned about mainframes. I don't know that much about them, but I do know that every single component is hot-swappable and redundant, so that's how I tried to design my application. As a bonus, I have to design it simply, and the process of rewriting it several times helps that end.