DevOps/Cloud
Auto Scaling
Also written as Autoscaling
A cloud feature that automatically adds or removes servers/instances based on current demand, instead of running a fixed amount of capacity at all times.
Think of it like
Like a restaurant automatically calling in extra staff during a dinner rush and sending them home once it's quiet, instead of scheduling the same headcount all day.
Junior or senior?
Junior sounds like
Set up auto-scaling with default thresholds and never revisited them.
Senior sounds like
Has tuned the thresholds themselves and can describe a time scaling reacted too slowly, or scaled up when it shouldn't have.
Ask them
“Tell me about a time your auto-scaling setup didn't react fast enough, or scaled up when it shouldn't have.”