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Session affinity in a load balancer sends

  • A.all requests from every client to a single backend
  • B.successive requests from one client to the same backend
  • C.every request to whichever backend is least loaded
  • D.each request to a backend chosen entirely at random

Answer: B

It allows a backend to hold session state in memory but undermines even load distribution. Moving the state to a shared store removes the need for it entirely. Affinity should be treated as a temporary accommodation, not a permanent design.

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