Frustrated by Magento? Then you’ll love
An interesting project (also forked and improved by Magento stalwart fbrnc) that lets you replay the contents of Magento’s database log for the purpose of improving performance during a Setup Resource upgrade. I haven’t tried using it, but it looks useful.
Also, if there’s any computer science teachers out there, it’s a nice example of how eventually every system starts to recreate other systems (database transactions/bin-log replay).