I would love to hear experiences from people/companies using Caddy in production (for example, replacing nginx). The project looks very promising, but for production usage one might also like a decent group of other people using it in production.
I only use it to host a couple low traffic personal sites but so far it's been fast & reliable. Configuration is easy because things like SSL cert management are baked in. It's perfect for my needs. Not sure if I'd recommend it for anything with a lot of diverse traffic, but it serves up basic WordPress blogs and node.js apps fine.