Comment by Damorian

We have a checklist system. Depending on which files are on your commit or which database objects are modified, you're presented with a checklist specific to the things you're changing. When something goes really wrong, the outcome of the post mortem often includes adding to or changing the checklist for the affected files/filetypes/team/whatever. It's not a perfect system, but it beats reading our long, confusing wiki pages.