* Using `INT_MAX` as the upper bound feels a bit meaningless. Would it make sense to cap this at a more reasonable value (say 30, 60, or 180 days)? That could help catch accidental misconfiguration — for example, typing `70d` instead of `7d`.
-1. We allow very large GUC ranges for lots of things, and don't try to catch accidental settings. Also, 70d seems a perfectly reasonable value to me.
