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Spring / Spring gRPC Interview Questions

What is a ServerInterceptor in gRPC, and what is it typically used for?

A ServerInterceptor wraps every incoming call before it reaches your service method, similar in role to a servlet filter in a traditional web stack. It's the natural place for cross-cutting concerns: authentication/authorization checks, structured logging, metrics collection, or metadata inspection/modification.

In the community Spring starter, you can register one globally by annotating a bean with @GrpcGlobalServerInterceptor, or attach it to specific services. Because interceptors run before your business logic executes, they're also a natural place to reject malformed or unauthorized calls early with an appropriate Status, without that logic being duplicated inside every service method.

What is the closest Spring MVC analogue to a gRPC ServerInterceptor?
Which annotation registers a ServerInterceptor globally with the community Spring gRPC starter?

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