Varnish: Can I “ban” based on TTL < 0?
The Varnish documentation on ban is not exactly clear to me. It suggests only a bunch of variables and operators are allowed, but also hints TTL could be used.
Varnish: Backend returns 503 even though it is healthy
I have a simple Express server running at https://img-optimizer-fragrant-cloud-4712.fly.dev and I would like to use Varnish to cache requests (both on fly.io).