When to use gRPC

use:

Every team member know how to use and its Pros/Cons

Large project

not use:

Choosing it without understanding its benefits and whether it should be integrated into the design, and especially when not wanting to invest time in learning, can lead to self-inflicted technical debt

I think gRPC itself is really simple and easy, but application code architecture using it is complicated a little bit.

If the problem can resolve more simply or effectivelyf by using RESTful, you should not choose gRPC.

Small project