Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 711 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03

Question #: 711
Topic #: 1

[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

An ecommerce company runs its application on AWS. The application uses an Amazon Aurora PostgreSQL cluster in Multi-AZ mode for the underlying database. During a recent promotional campaign, the application experienced heavy read load and write load. Users experienced timeout issues when they attempted to access the application.

A solutions architect needs to make the application architecture more scalable and highly available.

Which solution will meet these requirements with the LEAST downtime?

A. Create an Amazon EventBridge rule that has the Aurora cluster as a source. Create an AWS Lambda function to log the state change events of the Aurora cluster. Add the Lambda function as a target for the EventBridge rule. Add additional reader nodes to fail over to.
B. Modify the Aurora cluster and activate the zero-downtime restart (ZDR) feature. Use Database Activity Streams on the cluster to track the cluster status.
C. Add additional reader instances to the Aurora cluster. Create an Amazon RDS Proxy target group for the Aurora cluster.
D. Create an Amazon ElastiCache for Redis cache. Replicate data from the Aurora cluster to Redis by using AWS Database Migration Service (AWS DMS) with a write-around approach.

Show Suggested Answer

Suggested Answer: C 🗳️

by Andy_09 at Feb. 5, 2024, 5:49 p.m.

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Comments

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Marunio

Highly Voted 1 year, 4 months ago

Selected Answer: C

Only C is real viable option - Adding Reader replica for handling Read load and RDS Proxy for connections.

upvoted 7 times

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Andy_09

Highly Voted 1 year, 4 months ago

I would go for option C

upvoted 5 times

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sk1974

Most Recent 3 months, 3 weeks ago

Selected Answer: C

C is the most applicable among the 4 available options.

upvoted 1 times

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MatAlves

9 months, 1 week ago

Selected Answer: C

C - Explanation below:

upvoted 2 times

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MatAlves

9 months, 1 week ago

A - "Lambda function to log state changes" - doesn't help with read/write load. B - ZDR applies to restarts that Aurora performs automatically to resolve error conditions: doesn't help with read/write load. D - Write-around approach: data is always written to the database and the data that is read goes to the cache. Doesn't help with read/write load. C - CORRECT. Even though it doesn't address "write operations", Aurora Replicas to offload read workloads from the primary DB instance. Amazon RDS Proxy allows applications to pool and share connections established with the database, improving database efficiency and application scalability.

upvoted 4 times

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