Not who you replied to, but: you're probably thinking Frontend->Backend->DB or similar, right? Frontend runs in browser and is either served by its own containe

Not who you replied to, but: you're probably thinking Frontend->Backend->DB or similar, right? Frontend runs in browser and is either served by its own container or the backend, backend is in a containerized server, DB in something more persistent. Except, the reality is it's Frontend->Backend->DB->Storage. To some extent, the DB is just a standardized (and very quick) caching/sorting mechanism in front of an SSD, HDD, network drive, whatever. Storage can be separate and persistent, even if the DB is in a container and gets killed/dies. If that's the case, then even if the DB is in an ephemeral container the backing storage should always survive. With it, you can bring up a new DB container with all the same data being available. So yes, your passwords etc are in the "DB", but really they're in storage on disk. Yeah, your app won't work well if the DB disappears, but that's a given no matter whether your DB is in a container or somewhere else. Once it's back up, everything should work fine.