This is a falsehood i've seen repeated over and over. CDN's fail. You already have a connection to the 'stuff.com' self-hosted js. If your site is up but the

This is a falsehood i've seen repeated over and over. CDN's fail. You already have a connection to the 'stuff.com' self-hosted js. If your site is up but the cdn breaks you have another problem. Also the perf win for using a shared cdn version of for instance jquery is totally overstated. See discussions here too: https://news.ycombinator.com/item?id=11549131 https://news.ycombinator.com/item?id=11549131