When the city’s web tier scales in, active citizen sessions must not be cut mid-request. What should scale-in policies include?
Select an answer to reveal the explanation.
Short Explanation
Scale-in without draining is yanking the bridge while cars are still crossing. Graceful policies finish in-flight citizen requests, then retire the instance. Capacity can shrink without feeling like a slap in the face.
Full Explanation
Graceful scale-in drains existing connections and completes in-flight work before terminating instances. Abrupt removal during horizontal autoscaling causes user-visible errors even when overall capacity remains adequate. Designing scale-in with connection draining is part of sound Cloud+ horizontal scaling practice.