I am webmaster of a site on 1and1, and their system is configured so that the SQL databases are on a different computer then the WordPress site (note this is self hosted not using their TERRIBLY outdated "one click" install)
Anyway, THAT means that if the SQL server gets overwhelmed by someone else, or goes offline, then the website displays
"Error establishing a database connection"
I'd REALLY like to make that into a graceful screen, "Please try again later, or try these links (links to other related URLs)" or something like that.
So... Is there a plugin for this ? (I searched but found nothing) or does anyone know of a hook to use - as is good practice, I don't alter core WP files.