https://www.digitalocean.com/community/tools/nginx#
https://nginxproxymanager.com/
Kubernetes
CERT-MANAGER
https://cert-manager.io/docs/tutorials/acme/nginx-ingress/#step-7---deploy-a-tls-ingress-resource
CROSS-NAMESPACE-ROUTING
https://tech.aabouzaid.com/2022/08/2-ways-to-route-ingress-traffic-across-namespaces.html
CUSTOM AUTH HANDLER
https://kubernetes.github.io/ingress-nginx/examples/customization/external-auth-headers/
https://docs.nginx.com/nginx/admin-guide/security-controls/configuring-subrequest-authentication/
https://gock.net/blog/2020/nginx-subrequest-authentication-server/
gRPC ROUTING
https://juejin.cn/s/nginx%20ingress%20grpc%20example
https://faun.pub/grpc-loadbalancing-in-gke-using-nginx-ingress-controller-40d0b1971c3c
https://www.nginx.com/blog/nginx-1-13-10-grpc/
https://www.nginx.com/blog/deploying-nginx-plus-as-an-api-gateway-part-3-publishing-grpc-services/
https://medium.com/@fzambia/serving-secure-websocket-and-grpc-over-same-port-with-nginx-659662a18368
https://kubernetes.github.io/ingress-nginx/examples/grpc/