[miedpo]

Speed comparison... it's been a while since I've checked, but I remember hearing Caddy will perform at about 70% of the capacity of a fully tuned Nginx, at least as a reverse proxy. Don't remember where I read that. So Nginx will be a bit faster.

However, from what I hear, you will probably never run into a situation where you use all of that, at least in typical situations, because you'll probably run into RAM limits or CPU limits related to the SSL cryptography first. So both will probably be 'fast enough'.

Caddy will be easier to configure than Nginx. That's just because it has a config file built to be nice and easy to read.

There are probably more external tools built to work with Nginx, but you might not need those.

Don't know much about envoy or traefik comparisons, but from what I've heard, traefik is built for a little bit of a different purpose, mainly for containers. You'll have to research more into it.