- http://en.wikipedia.org/wiki/SPDY - http://dev.chromium.org/spdy/spdy-whitepaper - SPDY の紹介と nginx で SPDY を使う方法 -- http://techblog.heartrails.com/2013/01/using-spry-in-nginx.html - SPDYの話 -- http://www.slideshare.net/shigeki_ohtsu/spdy-13550476