[consteval]

It depends on the cost of complexity you're adding. Adding another database or whatever is really not that complex so yeah sure, go for it.

But a lot of companies are building distributed systems purely because they want this ultra-low downtime. Distributed systems are HARD. You get an entire set of problems you don't get otherwise, and the complexity explodes.

Often, in my opinion, this is not justified. Saving a few minutes of downtime in exchange for making your application orders of magnitude more complex is just not worth it.

Distributed systems solve distributed problems. They're overkill if you just want better uptime or crisis recovery. You can do that with a monolith and a database and get 99.99% of the way there. That's good enough.