This tool lets you explore how Varnish reacts to HTTP cache headers. I created it to help myself and others learn about HTTP caching semantics. You can run it

This tool lets you explore how Varnish reacts to HTTP cache headers. I created it to help myself and others learn about HTTP caching semantics. You can run it locally against a Docker-based Varnish instance, or try out some predefined examples (with hard-coded responses) on the demo website.