You might have heard of gRPC by now, a new RPC system that is quickly taking on JSON/HTTP as the recommended way to communicate between microservices. Its main selling points are well-defined schemas via Protocol Buffers 3, automatic client code generation for 10 different languages and bi-directional streaming. While gRPC has first class Go support and a stable release of has just been announced, the documentation is still a bit lacking, and it can be unclear how to do some things coming fro...