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Question 193 - DOP-C01 discussion

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You need to scale an RDS deployment. You are operating at 10% writes and 90% reads, based on your logging. How best can you scale this in a simple way?

A.
Create a second master RDS instance and peer the RDS groups.
Answers
A.
Create a second master RDS instance and peer the RDS groups.
B.
Cache all the database responses on the read side with CloudFront.
Answers
B.
Cache all the database responses on the read side with CloudFront.
C.
Create read replicas for RDS since the load is mostly reads.
Answers
C.
Create read replicas for RDS since the load is mostly reads.
D.
Create a Multi-AZ RDS installs and route read traffic to standby.
Answers
D.
Create a Multi-AZ RDS installs and route read traffic to standby.
Suggested answer: C

Explanation:

The high-availability feature is not a scaling solution for read-only scenarios; you cannot use a standby replica to serve read traffic. To service read-only traffic, you should use a Read Replica. For more information, see Working with PostgreSQL, MySQL, and MariaDB Read Replicas.

Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html

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asked 16/09/2024
Kishen Morar
45 questions
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