Integrating FastAPI with gRPC

gRPC is a high-performance, open source universal Remote Procedure Call (RPC) framework originally developed by Google. It is designed to be efficient, lightweight, and interoperable across different programming languages and platforms. Integrating FastAPI with gRPC allows you to leverage the power of RPC for building efficient, scalable, and maintainable APIs.

The recipe will show how to build a gateway between a REST client and a gRPC server by using FastAPI.

Getting ready

To follow the recipe, it can be beneficial to have some previous knowledge of protocol buffers. You can have a look at the official documentation at https://protobuf.dev/overview/.

Also, we will use the proto3 version to define the .proto files. You can check the language guide at https://protobuf.dev/programming-guides/proto3/.

We will create a dedicated root project folder for the recipe called grpc_gateway.

Aside from fastapi and uvicorn, you also need to install...