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How can you combine DynamoDB auto-scaling with CloudWatch alarms to improve scaling accuracy?

hard🚀 Application Q9 of 15
DynamoDB - Cost Optimization and Monitoring
How can you combine DynamoDB auto-scaling with CloudWatch alarms to improve scaling accuracy?
AUse CloudWatch alarms to trigger scaling actions via Application Auto Scaling
BDisable auto-scaling and rely only on CloudWatch alarms
CSet CloudWatch alarms to change table schema
DUse CloudWatch alarms to delete unused tables
Step-by-Step Solution
Solution:

  1. Step 1: Understand integration possibilities

    CloudWatch alarms can monitor metrics and trigger scaling via Application Auto Scaling.

  2. Step 2: Exclude incorrect uses

    Alarms do not change schema or delete tables; disabling auto-scaling removes automation.

  3. Final Answer:

    Use CloudWatch alarms to trigger scaling actions via Application Auto Scaling -> Option A

  4. Quick Check:

    CloudWatch alarms trigger scaling = B [OK]
Quick Trick: Link CloudWatch alarms to Application Auto Scaling for precise control [OK]
Common Mistakes:
MISTAKES
  • Thinking alarms change schema or delete tables
  • Disabling auto-scaling loses automation
  • Assuming alarms work without scaling policies

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