That may be cheap, but once you see a little traffic spike coming from Hacker News, all you get is an "Error establishing a database connection."
That sounds a like a reference, but I don't know it. Could you explain?
This is mildly like the situation where you should always slashdot-proof your web servers if it's easy to do, just in case some piece of content you have on there gets slashdotted. I feel like I say this so much that it's become my "stick of butter" story.