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Exam AWS Certified Developer - Associate DVA-C02 All Questions

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Exam AWS Certified Developer - Associate DVA-C02 topic 1 question 217 discussion

Exam question from Amazon's AWS Certified Developer - Associate DVA-C02
Question #: 217
Topic #: 1
[All AWS Certified Developer - Associate DVA-C02 Questions]

A developer has built a market application that stores pricing data in Amazon DynamoDB with Amazon ElastiCache in front. The prices of items in the market change frequently. Sellers have begun complaining that, after they update the price of an item, the price does not actually change in the product listing.

What could be causing this issue?

  • A. The cache is not being invalidated when the price of the item is changed.
  • B. The price of the item is being retrieved using a write-through ElastiCache cluster.
  • C. The DynamoDB table was provisioned with insufficient read capacity.
  • D. The DynamoDB table was provisioned with insufficient write capacity.
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Suggested Answer: A 🗳️
by Claire_KMT at Oct. 28, 2023, 8:53 a.m.
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65703c1
5 months ago
Selected Answer: A
A is the correct answer.
upvoted 1 times
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Certified101
10 months, 1 week ago
Selected Answer: A
A is correct
upvoted 3 times
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kaes
11 months ago
Selected Answer: A
ANS: A The cache needs to be invalidated. The write-through approach could be helpful here
upvoted 4 times
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Claire_KMT
12 months ago
A. The cache is not being invalidated when the price of the item is changed. In a caching setup using Amazon ElastiCache in front of Amazon DynamoDB, if the cache is not being invalidated or updated when data in DynamoDB is changed, it can result in stale data being served from the cache, leading to the observed behavior. To resolve this issue, you should implement a mechanism to invalidate or update the cache whenever the price of an item is changed in DynamoDB to ensure that the most up-to-date data is retrieved from the cache or DynamoDB.
upvoted 4 times
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