Recruiter call followed by a technical round through CoderPad.

It contained a recruiter call that covered overall experience explanation, and a technical round on CoderPad.

This is pretty standard in the Bay Area or any other company there.

Design Router Communication

Router A should be able to send messages to Router B. Router B should not be exposed to the outer world.

Router B should send messages to Router C. This time, Router B should be exposed to the outer world, not just through Router A.

Lastly, Router C is also exposed to A and B. Either A or B, or both, can send messages to C, to the same instance of C.