[Solved] Consider a DynamoDB table with provisioned capacity of 10 read units... If your application performs 8 strongly consistent reads and 3 writes per second, which billing mode will likely cost less? | DynamoDB

DynamoDB - Cost Optimization and Monitoring

Consider a DynamoDB table with provisioned capacity of 10 read units and 5 write units. If your application performs 8 strongly consistent reads and 3 writes per second, which billing mode will likely cost less?

ACannot determine without data size

BOn-demand mode

CBoth cost the same

DProvisioned mode

Step-by-Step Solution

Solution:

Step 1: Analyze usage vs provisioned capacity
The app uses 8 reads and 3 writes per second, which is below the provisioned 10 reads and 5 writes capacity.
Step 2: Compare cost implications
Provisioned mode charges fixed capacity regardless of usage, so if usage is steady and below provisioned, it is cheaper than on-demand which charges per request.
Final Answer:
Provisioned mode -> Option D
Quick Check:
Steady low usage < provisioned = Provisioned cheaper [OK]

Quick Trick: If usage steady and below capacity, provisioned is cheaper [OK]

Common Mistakes:

MISTAKES

Assuming on-demand is always cheaper
Ignoring provisioned capacity limits
Thinking cost depends only on data size

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More DynamoDB Quizzes

If your application performs 8 strongly consistent reads and 3 writes per second, which billing mode will likely cost less?

Step 1: Analyze usage vs provisioned capacity

Step 2: Compare cost implications

Final Answer:

Quick Check:

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