http://www.javaeye.com/topic/
http://www.blogjava.net/Jack2007/archive/2008/05/30/204146.html
http://www.infoq.com/cn/articles/etags
http://www.slashdotdash.net/2007/07/31/rails-performance-tip-using-yslow/
中文，不错 ，汇总型
http://www.blogjava.net/BearRui/archive/2010/04/26/web_performance.html