You observe the CloudWatch metric ConsumedReadCapacityUnits for a DynamoDB table spikes to 1500 units while the provisioned read capacity is 1000 units. What is the most likely outcome?

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DynamoDB - Cost Optimization and Monitoring

You observe the CloudWatch metric ConsumedReadCapacityUnits for a DynamoDB table spikes to 1500 units while the provisioned read capacity is 1000 units. What is the most likely outcome?

ASome read requests will be throttled

BAll read requests will succeed without delay

CWrite requests will be throttled instead

DThe table will automatically increase provisioned capacity

Step-by-Step Solution

Solution:

Step 1: Compare consumed read capacity with provisioned capacity
ConsumedReadCapacityUnits exceeds provisioned capacity (1500 > 1000), meaning demand is higher than allowed.
Step 2: Understand DynamoDB behavior on capacity exceed
DynamoDB throttles requests exceeding provisioned capacity; it does not auto-scale unless configured.
Final Answer:
Some read requests will be throttled -> Option A
Quick Check:
Consumed > Provisioned = Throttling occurs [OK]

Quick Trick: Exceeding provisioned capacity causes throttling [OK]

Common Mistakes:

MISTAKES

Assuming automatic capacity increase without auto-scaling
Confusing read and write throttling
Believing all requests succeed despite overuse

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You observe the CloudWatch metric ConsumedReadCapacityUnits for a DynamoDB table spikes to 1500 units while the provisioned read capacity is 1000 units. What is the most likely outcome?

Step 1: Compare consumed read capacity with provisioned capacity

Step 2: Understand DynamoDB behavior on capacity exceed

Final Answer:

Quick Check:

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