REST vs gRPC

Both REST and gRPC are protocols for communication.

REST is a way client-server communication based on HTTP/1 w/ GET, PUT, POST, DELETE, PATCH methods. Roy Fielding introduced with a set of concepts like cachability, stateless behavior etc.

References

Representational state transferWikipedia

Fielding Dissertation: CHAPTER 5: Representational State Transfer (REST)

gRPC

gRPC (Remote Procedure Call) is an open-source data exchange technology developed by Google using the HTTP/2 protocol.

It uses the Protocol Buffers binary format (Protobuf) for data exchange. Also, this architectural style enforces rules that a developer must follow to develop or consume web APIs.

RPC follows a client-response model of communication for designing web APIs that rely on HTTP/2. Hence, gRPC allows streaming communication and serves multiple requests simultaneously. In addition to that, gRPC also supports unary communication similar to REST.

REST vs. gRPC | BaeldungBaeldung

gRPCgRPC

https://dudewho.codes/talks/building-better-python-microservices-with-grpc/