gRPC

https://grpc.io

https://github.com/grpc

https://github.com/fullstorydev/grpcurl

Pros and cons: https://www.linkedin.com/feed/update/urn:li:activity:7118811546624954368/

https://github.com/GoogleCloudPlatform/microservices-demo - Sample cloud-first application with 10 microservices showcasing Kubernetes, Istio, and gRPC