Have you had experience using gRPC in your projects?

Yes, there is experience using gRPC in projects. gRPC is a modern framework for remote procedure calls (RPC) that uses HTTP/2 and Protocol Buffers for efficient and fast communication between services.

Main advantages of gRPC:

• High performance thanks to HTTP/2 and binary data format.
• Support for streaming data in both directions.
• Automatic generation of client and server code in various languages.

Example of a simple service in Python using gRPC:

import grpc
from concurrent import futures
import example_pb2
import example_pb2_grpc

class ExampleService(example_pb2_grpc.ExampleServicer):
    def SayHello(self, request, context):
        return example_pb2.HelloReply(message='Hello, %s!' % request.name)

server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
example_pb2_grpc.add_ExampleServicer_to_server(ExampleService(), server)
server.add_insecure_port('[::]:50051')
server.start()
server.wait_for_termination()

Thus, gRPC allows creating efficient distributed systems with clearly defined contracts.