Depends on the cost of doubling up and the cost of the outage. If you're looking at half an hour once a decade versus triple the development complexity, you eat the outage.
Sometimes you just have to deal with it. If your site sits behind CloudFlare you'd probably be better off just weathering the storm.
The decentralized web is coming
Like the yesr of the Linux desktop?
Some argue it's already been there for a while [0]