AWS - Auto Scaling
An Auto Scaling group has a cooldown period of 200 seconds. A scale-out event occurs at 10:00:00 AM. Another scale-out event is triggered at 10:02:30 AM. What happens?
An Auto Scaling group has a cooldown period of 200 seconds. A scale-out event occurs at 10:00:00 AM. Another scale-out event is triggered at 10:02:30 AM. What happens?
medium📝 service behavior Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Calculate time difference between events
The second event is at 10:02:30 AM, which is 150 seconds after 10:00:00 AM.Step 2: Compare with cooldown period
Cooldown is 200 seconds, but only 150 seconds passed, so cooldown is still active.Step 3: Understand AWS default cooldown behavior
For scale-out events, AWS Auto Scaling respects the cooldown period and blocks new scale-out actions until cooldown ends.Final Answer:
The second scale-out event is ignored due to cooldown -> Option AQuick Check:
Scale-out cooldown respected = true [OK]
Quick Trick: Cooldown blocks scale-out events until cooldown ends [OK]
Common Mistakes:
MISTAKES- Assuming cooldown blocks all scaling events
- Ignoring AWS scale-out cooldown behavior
- Confusing cooldown reset behavior
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