I won't use anything journaled on SSDs.
What happens? I don't know... fsck would run automatically on reboot, fix the errros and recover part of the last file written in /lost+found/
But why would a server abruptly shut down 1000 times?? I already said btrfs is good enough for desktops and other interactive/supervised systems. And data loss on servers is recovered from backups, not journals!