Please add caching of full rendered wiki pages for logged-out users. I'd much rather get a cached page from yesterday in 100ms than wait 10 seconds for today's edits to be rendered.
Though we are getting a spike in traffic with the redesign launch, New Relic still reports app server response times of <600ms. But WebPagetest confirms really slow load times. [1]
If anyone finds some gross offenders of page performance, please file a bug: http://bugzilla.mozilla.org/form.mdn or better yet - send a pull request: https://github.com/mozilla/kuma !
This is mainly static content you got there, it's the easiest scenario for aggressive content caching. Just throw in a good Memcached server and serve the whole page from cache. Add some good expiration headers + etags and the website will fly. Unless you have problems with request queueing, which would be a completely different topic.