Results 3 comments of kmmk

Thanks for the useful pointer. I think that alternatives should be mentioned or linked in the [Caching guidance - Azure Architecture Center](https://docs.microsoft.com/en-us/azure/architecture/best-practices/caching) page. Having the information here in the git...

Based on your feedback, I was able get real backends in backends.vcl and also "X-Varnish-Cache: HIT" in the response. The problem was due to the backend.port referring to the service...

@cin sorry for the delayed response. I think watching the (proxy) service (of type [ExternalName](https://kubernetes.io/docs/concepts/services-networking/service/#externalname) or containing [externalIPs](https://kubernetes.io/docs/concepts/services-networking/service/#external-ips) for changes and then updating the VCL could be a suitable approach....