Architecture Matters : Building Clojure Services At Scale At SoundCloud by Charles Ditzel.
Charles points to three posts on Clojure services at scale:
Building Clojure Services at Scale by Joseph Wilk.
Architecture behind our new Search and Explore experience by Petar Djekic.
Evolution of SoundCloud’s Architecture by Sean Treadway.
If you aren’t already following Charle’s blog (I wasn’t, am now), you should be.