WP_Cache seemed to work well for Mokka mit Schlag so now I’ve installed it here on The Cafes too. It dramatically speeds up performance by caching query responses while still allowing for live comments and editing and all that yummy fired goodness WordPress is famous for. We shall see. If anyone notes any problems on this site suddenly cropping up, please holler.
One thing that bothers me is I still don’t have any good or even mediocre way to actually measure the performance of this blog, much less figuring out where the problems lie. It’s all subjective based on occasional queries that timeout or take longer than I’d like. I’d appreciate any suggestions anyone has for automated performance testing of a WordPress server.