Recently discovered Traefik (https://traefik.io/) which is a highly performant reverse proxy written in Go. Supports just about every popular backend in existence (Docker, Kuber, Eureka, Consul and whatnot), supports metrics through statsd, Prometheus, Datadog or RYO via REST. Has a pretty good Admin UI but also comes with a REST API to integrate it in your own.

Also it is entirely free and open source. Yes you are reading it correctly: Within your edge environment you are able to get pretty much all the features of a $2500+ per instance NGINGX Plus deployment with equal performance for nothing but a little investment in time (unless you need/want commercial support, ofcourse).