Comment on The Day I Took Down 100,000 Web SitesComments−webmonkeyuk14yI think the "Test your changes somewhere other than production" lesson was left out from the list at the end of the post−sefkOP14yFair point. I had tested that delete/restore had worked, it's just the "what are you deleting" criteria that I'd missed. Our test environment didn't match production that closely so the difference in data is what bit me.−lmm14yThat's the big, and more subtle lesson: it is really important that your test environment be very similar to production.
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I think the "Test your changes somewhere other than production" lesson was left out from the list at the end of the post
Fair point. I had tested that delete/restore had worked, it's just the "what are you deleting" criteria that I'd missed. Our test environment didn't match production that closely so the difference in data is what bit me.
That's the big, and more subtle lesson: it is really important that your test environment be very similar to production.