Backups must be restored and verified—I measured the conditions under which SQLite, PostgreSQL, and MySQL fail to restore and created a verification script

When judging whether a backup can be restored based solely on exit codes and integrity checks, I found conditions in SQLite, ...

If you swap a MySQL 8.4 volume to 9.7, accounts using mysql_native_password will no longer be able to connect—though it will start. I measured what remains and wh…

MySQL 9.7 is the next LTS after 8.4, and the official stance supports the path from 8.4 LTS to 9.7 LTS. Meanwhile, ...