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Exam AWS Certified Database - Specialty topic 1 question 133 discussion

Exam question from Amazon's AWS Certified Database - Specialty
Question #: 133
Topic #: 1
[All AWS Certified Database - Specialty Questions]

A company has an application that uses an Amazon DynamoDB table to store user data. Every morning, a single-threaded process calls the DynamoDB API Scan operation to scan the entire table and generate a critical start-of-day report for management. A successful marketing campaign recently doubled the number of items in the table, and now the process takes too long to run and the report is not generated in time.
A database specialist needs to improve the performance of the process. The database specialist notes that, when the process is running, 15% of the table's provisioned read capacity units (RCUs) are being used.
What should the database specialist do?

  • A. Enable auto scaling for the DynamoDB table.
  • B. Use four threads and parallel DynamoDB API Scan operations.
  • C. Double the table's provisioned RCUs.
  • D. Set the Limit and Offset parameters before every call to the API.
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
by novak18 at April 4, 2021, 7:38 a.m.
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Jaypdv
Highly Voted 3 years, 8 months ago
B. https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Scan.html#Scan.ParallelScan
upvoted 13 times
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MultiAZ
Most Recent 1 year, 6 months ago
Selected Answer: B
Answer is B
upvoted 1 times
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Pranava_GCP
1 year, 10 months ago
Selected Answer: B
B. Use four threads and parallel DynamoDB API Scan operations.
upvoted 1 times
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SachinGoel
2 years, 6 months ago
Selected Answer: B
More thread is a key
upvoted 1 times
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db2luwdba
3 years ago
B make sense but this has to done programmatically by the application team to process read by multi threaded application calls
upvoted 1 times
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novice_expert
3 years, 2 months ago
Selected Answer: B
15% means max 6 threads possible, 4 are good
upvoted 2 times
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ChauPhan
3 years, 8 months ago
Every morning, a single-threaded process calls the DynamoDB API Scan operation to scan the entire table ==> B
upvoted 1 times
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Aesthet
3 years, 8 months ago
B final answer
upvoted 2 times
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novak18
3 years, 9 months ago
https://aws.amazon.com/blogs/database/amazon-dynamodb-auto-scaling-performance-and-cost-optimization-at-any-scale/#:~:text=To%20configure%20auto%20scaling%20in,alarms%20that%20track%20consumed%20capacity. Answer should be A?
upvoted 1 times
awsmonster
3 years, 6 months ago
15% utilization of the allocated RCUs does not required to scale the Dynamo DB.
upvoted 2 times
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jove
3 years, 6 months ago
No, it is B
upvoted 1 times
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