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Question 112 - DBS-C01 discussion

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A large retail company recently migrated its three-tier ecommerce applications to AWS. The company’s backend database is hosted on Amazon Aurora PostgreSQL. During peak times, users complain about longer page load times. A database specialist reviewed Amazon RDS Performance Insights and found a spike in IO:XactSync wait events. The SQL attached to the wait events are all single INSERT statements.

How should this issue be resolved?

A.
Modify the application to commit transactions in batches
Answers
A.
Modify the application to commit transactions in batches
B.
Add a new Aurora Replica to the Aurora DB cluster.
Answers
B.
Add a new Aurora Replica to the Aurora DB cluster.
C.
Add an Amazon ElastiCache for Redis cluster and change the application to write through.
Answers
C.
Add an Amazon ElastiCache for Redis cluster and change the application to write through.
D.
Change the Aurora DB cluster storage to Provisioned IOPS (PIOPS).
Answers
D.
Change the Aurora DB cluster storage to Provisioned IOPS (PIOPS).
Suggested answer: A

Explanation:


https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraPostgreSQL.Reference.html

"This wait most often arises when there is a very high rate of commit activity on the system. You can sometimes alleviate this wait by modifying applications to commit transactions in batches. "

https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/apg-waits.xactsync.html

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asked 16/09/2024
Rio Ordonez
51 questions
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