Comment by mwcampbell

It seems to me that the central idea of this post, having all application state rooted in one top-level object/structure with no singletons/globals, with the ability to set up and cleanly tear down multiple instances any number of times, is applicable well beyond Clojure. Looks like all-around good design to me. I suppose some might argue, though, that it's all an elaborate work-around for a slow-starting runtime environment.