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Wait, I thought gravity is not a "force" but the curvature of spacetime, so at some point the curvature gotta end or be disturbed by some other source nearby, right? A star so far away is not exerting any "force" on me as I already have two massive objects Earth and Sun twisting the spacetime around me so much. I could however be getting some gravitational waves from that star but not sure how strong they'd be or if they reach me at all (again given Sun and Earth).
(NOTE: I'm an engineer not a physicist so my understanding could all be wrong)
At my workplace, we use it for East-West traffic, especially the central Identity, Authentication and Authorization service which every other service needs to access, and it works great for that use case (Since it allows the downstream services to fetch information however they like). REST can do that too, but it will be cumbersome to say the least. Although GraphQL performance has come under scrutiny lately.