Protobuf is the most commonly used IDL (Interface Definition Language) for gRPC. It’s where you basically store your data and function contracts in the form of a proto file. … The proto file acts as the intermediary contract for client to call any available functions from the server.

Protobuf is the most commonly used IDL (Interface Definition Language) for gRPC. It’s where you basically store your data and function contracts in the form of a proto file. … The proto file acts as the intermediary contract for client to call any available functions from the server.