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Question 448 - SAA-C03 discussion

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A company has a serverless application on AWS that uses Amazon RDS as a backend database. The application sometimes experiences a sudden unpredictable increase in traffic. During traffic increases, the application frequently opens and closes connections to the database, which causes the application to receive errors from the database or run out of connections. The company needs to ensure that the application is always scalable and highly available.

Which solution will meet these requirements WITHOUT any code changes to the application?

A.
Increase the maximum number of connections in the option group of the RDS database of the serverless application.
Answers
A.
Increase the maximum number of connections in the option group of the RDS database of the serverless application.
B.
Increase the instance size of the RDS DB instance to meet the peak load traffic.
Answers
B.
Increase the instance size of the RDS DB instance to meet the peak load traffic.
C.
Deploy Amazon RDS Proxy between the serverless application and Amazon RDS.
Answers
C.
Deploy Amazon RDS Proxy between the serverless application and Amazon RDS.
D.
Purchase Reserved Instances for Amazon RDS to ensure that the database is highly available during peak load traffic.
Answers
D.
Purchase Reserved Instances for Amazon RDS to ensure that the database is highly available during peak load traffic.
Suggested answer: C

Explanation:

Amazon RDS Proxy is a fully managed database proxy that makes applications more scalable, more resilient to database failures, and more secure. RDS Proxy sits between your application and your relational database to pool and share established database connections, improving database efficiency and application scalability. RDS Proxy also reduces the load on the database by handling connection management and query retries for transient errors. By deploying RDS Proxy between your serverless application and Amazon RDS, you can avoid opening and closing connections to the database frequently, which can cause errors or run out of connections. This solution will also reduce operational costs and improve availability of your application.

Reference: https://aws.amazon.com/rds/proxy/

asked 16/09/2024
Kash Rx
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