A company has an existing system that uses a single-instance Amazon DocumentDB (with MongoDB compatibility) cluster. Read requests account for 75% of the system queries. Write requests are expected to increase by 50% after an upcoming global release. A database specialist needs to design a solution that improves the overall database performance without creating additional application overhead.
Which solution will meet these requirements?

A. Recreate the cluster with a shared cluster volume. Add two instances to serve both read requests and write requests.

B. Add one read replica instance. Activate a shared cluster volume. Route all read queries to the read replica instance.

C. Add one read replica instance. Set the read preference to secondary preferred.

D. Add one read replica instance. Update the application to route all read queries to the read replica instance.








 

Suggested Answer: A

Community Answer: C




This question is in DBS-C01 AWS Certified Database – Specialty Exam
For getting AWS Certified Database – Specialty Certificate


Disclaimers:
The 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.
The website does not contain actual questions and answers from Amazon's Certification Exam.