[blattimwind]

This site is a good counter-example for website optimization: While it uses many assets, so a CDN domain makes sense, it spreads them out thinly. It loads over 100 CSS files, most of which are below 1K. Similarly it loads approximately 30 JS scripts, most of which are just a few K each. This is mitigated to a large extent by using HTTP/2.0, which permits a few dozen or so parallel requests, but it still means that a repeated load of the page takes 2-3 seconds. (Without HTTP/2.0 this probably takes ages, since browsers open only a few connections to each origin at most). There is also almost no difference between reloading with and without the cache.