Off the top of my head, I'm not sure (other than follow-up work to this paper, like http://jeapostrophe.github.io/home/static/icfp065-mccarthy.p... [ICFP '09]). But, the ideas in that paper aren‘t any less true just because they are from 2005, and they are still what the Racket web server runs on as far as I know :-)