A CDN-backed CTAN Mirror: `tlnet.yihui.org`

I set up a partial CTAN (Comprehensive TeX Archive Network) mirror this month at https://tlnet.yihui.org . This post explains why it exists, what&rsquo;s in it, and how to use it. The short version: TinyTeX now uses it by default, so many of you are already benefiting from it without knowing. The problem with CTAN mirrors CTAN has no CDN (Content Delivery Network). There is a mirror multiplexor…