[wiml]

I'm always confused that anybody doesn't have secondary servers, for anything larger than a one-off vanity site.

If your DNS needs are simple, then running a secondary is extremely easy. The hardest part is that you'll probably interact with it so rarely you'll forget it's there.

If your DNS needs are complex, then running a secondary is harder but it's still probably a small fraction of the effort you're putting into the primary server.