At Unikraft, we are now launching KraftCloud, the millisecond platform. It provides modern cloud features: fast boots, scale-to-zero, autoscale - all based on the open source Unikraft technology.
Caddy is one of the applications running on KraftCloud. This guide details running Caddy on KraftCloud.
You can toy around with it, and see if it applies to your own use case. Sign up here.
Find out more information on the launch blog post.