The gRPC Gateway serves as a proxy between RESTful JSON API and gRPC, translating HTTP/1.1 requests into gRPC calls and vice versa. It enables the coexistence of both APIs in one service, providing flexibility for clients to choose either interface.
Its benefits are manifold. Firstly, it allows developers to write only one API service but offer two different interfaces. This reduces development time and effort. Secondly, it provides backward compatibility with existing services that use RESTful APIs while allowing new services to leverage the advantages of gRPC such as high performance and strong type checking. Thirdly, it simplifies client-side coding by eliminating the need to handle different protocols for different services.
