BackendHigh signalAround since 2015
gRPC
A high-performance framework (from Google) for services to call each other directly, often faster than REST for service-to-service communication, commonly used inside microservices architectures.
Think of it like
Like a dedicated internal phone line between two departments in the same building, versus REST's more general public-facing mail system.
Junior or senior?
Junior sounds like
Doesn't know why gRPC was chosen over REST.
Senior sounds like
Can explain what made gRPC the right call for that service-to-service communication.
Ask them
“What made your team choose gRPC over REST for that service-to-service communication?”