ExpertMedium1 markMultiple Choice
AWS SAA-C03 · Question 57 · Domain 4.3: Database Cost Optimization
A new startup is launching a mobile app backed by Amazon DynamoDB. They have no historical data to predict traffic patterns and expect sudden, unpredictable spikes in usage. Which DynamoDB capacity mode is the MOST cost-effective?
A new startup is launching a mobile app backed by Amazon DynamoDB. They have no historical data to predict traffic patterns and expect sudden, unpredictable spikes in usage. Which DynamoDB capacity mode is the MOST cost-effective?
Answer options:
A.
Provisioned capacity mode with Auto Scaling
B.
On-Demand capacity mode
C.
Provisioned capacity mode with a high fixed capacity
D.
Reserved capacity
How to approach this question
Match 'unpredictable spikes' to the capacity mode.
Full Answer
B.On-Demand capacity mode✓ Correct
On-Demand capacity mode
Amazon DynamoDB On-Demand is a flexible billing option capable of serving thousands of requests per second without capacity planning. It is ideal for unpredictable workloads.
Common mistakes
Choosing Provisioned with Auto Scaling, which can be too slow for sudden, sharp spikes.
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