Using gRPC for (local) inter-process communication (2021)

> Using a full-featured RPC framework for IPC seems like overkill when the processes run on the same machine.

That is exactly what COM/WinRT, XPC, Android Binder, D-BUS are.

Naturally they have several optimisations for local execution.

Btw. Modern windows also superports Unix domain sockets, so if you have an app that has another service that will run on the same machine or on a different one it is not so bad to use grpc over uds.

Nice idea, although it is still slower than COM.

COM can run over the network (DCOM), inside the same computer on its own process (out-proc), inside the client (in-proc), designed for in-proc but running as out-proc (COM host).

So for max performance, with the caveat of possibly damaging the host, in-proc will do it, and be faster than any kind of sockets.