Link Master --> Performance mysql

http://www.techiecorner.com/45/turn-on-mysql-query-cache-to-speed-up-mysql-query-performance/

http://www.techtipsdigital.com/analyze-test-web-site-performance-speed/475/

http://www.webpagetest.org/

http://bacsoftwareconsulting.com/blog/index.php/web-programming/caching-a-dynamic-website-does-it-make-a-difference-for-loading-speed/

http://forums.digitalpoint.com/showthread.php?t=272020

http://code.google.com/p/minify/