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Check: scaling

Knowledge check · 5 min · Module 7, lesson 5 of 55 min left in this module

Module 7 · ScalingLesson 5 of 5

Goal: Confirm you can choose between a bigger shape, more spherelets and autoscaling, and know how autoscaling behaves.

Four questions: three on Module 7, one on Module 5. Every answer explains itself, right or wrong.

An API on 1 Flex spherelet answers in 40 ms with a few users and in 2 seconds at lunchtime. CPU hits its ceiling only at lunchtime; memory is steady. What fits best?
Autoscaling took a service from 1 spherelet to 2 during a burst of traffic. The burst ended two minutes ago, and it still runs 2. What's happening?
A service keeps each user's login session in memory. You scale it to 2 spherelets. What do users notice?
From Module 5: after a deploy, the shop shows Failed and its URL doesn't answer. What do you look at first, after the status?

Retry as often as you like.