Raw Row results are never cached. If your application is using raw rows for its batch operations and is still having memory problems, then you need to evaluate your code. OptimizeIt or JProbe is definitely worth having. That's true even if you aren't doing raw row work.
At WOWODC 2009 East, Mark Ritchie managed to dig up an old XCode project called Freshness Explorer for his demo. It appears the copy has been updated to work with WOLips and is currently located here (svn site). That project has dependency on the MySQL database, which is great if you're using MySQL. If you are not using MySQL, you can use this patch to remove the dependency and use Wonder's memory adaptor instead.