ipython/nbviewer — pull request #1 by Carreau (2012-08-05 17:27:40+00:00)
Title: Be ready to cache result

one of the "free" cache system we can have with heroku is memcached,
this make the nbviewer ready to use memcache to speedup redistributing notbook.

riht now it is dumb and cache almost everything for 10minutes,
but you can feel the difference when browsing