Clojure web server shoot-out

Results

• Clojure Google Group discussion: http://goo.gl/xe46R.
• Detailed benchmark results available in /results/.
• Chart available on Google Docs.
• Margin of error: +/- ~10%.

Pending changes

• None

Configuration

• Macbook Air 1.7GHz Intel Core i5 with 4GB 1333MHz DDR3, running Mac OS X 10.7.5.
• Clojure 1.5.0-RC1 on Oracle JDK7 build 1.7.0_04-b21.
• Response length: 1163 bytes (servers/index.html).
• ApacheBench Version 2.3 Revision: 1373084. (NB requires upgrade on OS X).
• ApacheBench ab -n 120000 -c <16,64,92> -rk.
• Leiningen trampoline, :jvm-opts ["-server" "-XX:+UseConcMarkSweepGC"].
• See scripts/bench.sh for full details, including OS and TCP tuning.
• See servers/nginx.conf for nginx config. TODO: Improve. Suggestions?
• TODO: Higher concurrency testing: c=200, c=500, c=1000.

Servers

• Jetty Ring adapter - Standard Ring adapter.
• SimpleWeb Ring adapter - Pure-Java HTTP server without using Servlets.
• Netty Ring adapter - Netty adapter for use with Ring.
• http-kit - HTTP client/server with async & WebSockets support.
• Aleph - Clojure framework for asynchronous communication, built on top of Netty and Lamina.
• Aloha - Reference implementation of a Clojure/Netty webserver, or basically Aleph without any extraneous fluff.
• Jetty 7, Jetty 8, Tomcat 7 servlets via lein-servlet.
• nginx 1.2.6.
• TODO: Containers (Jetty, Tomcat, GlassFish), Webbit. More ideas welcome!

Contact & contribution

Welcoming pull-requests for:

• More servers.
• Updated servers (no snapshot releases please!).
• Server / bench config tuning!

Reach me (Peter Taoussanis) at taoensso.com for questions/comments/suggestions/whatever. I'm very open to ideas if you have any! I'm also on Twitter:@ptaoussanis.