Exam AWS Certified DevOps Engineer - Professional DOP-C02 topic 1 question 211 discussion

Exam question from Amazon's AWS Certified DevOps Engineer - Professional DOP-C02

Question #: 211
Topic #: 1

[All AWS Certified DevOps Engineer - Professional DOP-C02 Questions]

A DevOps engineer is building an application that uses an AWS Lambda function to query an Amazon Aurora MySQL DB cluster. The Lambda function performs only read queries. Amazon EventBridge events invoke the Lambda function.

As more events invoke the Lambda function each second, the database's latency increases and the database's throughput decreases. The DevOps engineer needs to improve the performance of the application.

Which combination of steps will meet these requirements? (Choose three.)

A. Use Amazon RDS Proxy to create a proxy. Connect the proxy to the Aurora cluster reader endpoint. Set a maximum connections percentage on the proxy.
B. Implement database connection pooling inside the Lambda code. Set a maximum number of connections on the database connection pool.
C. Implement the database connection opening outside the Lambda event handler code.
D. Implement the database connection opening and closing inside the Lambda event handler code.
E. Connect to the proxy endpoint from the Lambda function.
F. Connect to the Aurora cluster endpoint from the Lambda function.

Show Suggested Answer

Suggested Answer: ACE 🗳️

by Seoyong at March 13, 2024, 6:22 a.m.

Disclaimers:

- ExamTopics website is not related to, affiliated with, endorsed or authorized by Amazon.
- Trademarks, certification & product names are used for reference only and belong to Amazon.

Comments

Submit Cancel

dkp

Highly Voted 1 year, 2 months ago

Selected Answer: ACE

Opening and closing database connections outside the Lambda handler allows for efficient reuse of connections and implements connection pooling

upvoted 6 times

...

WhyIronMan

Highly Voted 1 year, 3 months ago

Selected Answer: ADE

A, D, E For those going with A,C,E, the same link already provided here https://aws.amazon.com/blogs/compute/using-amazon-rds-proxy-with-aws-lambda/ in the nodejs/javascript code you can see that database connection opening (connection.connect) and closing (connection.end) are being handled INSIDE the handler function, which is correct because you want to open connections but it is a good practice to close connections

upvoted 6 times

...

GripZA

Most Recent 10 months, 2 weeks ago

Selected Answer: ACE

"By opening the database connection outside the event handler, the connection can be reused across multiple invocations, which reduces the overhead of establishing new connections repeatedly."

upvoted 3 times

...