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Question 659 - SAA-C03 discussion

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A company hosts a database that runs on an Amazon RDS instance that is deployed to multiple Availability Zones. The company periodically runs a script against the database to report new entries that are added to the database. The script that runs against the database negatively affects the performance of a critical application. The company needs to improve application performance with minimal costs.

Which solution will meet these requirements with the LEAST operational overhead?

A.
Add functionality to the script to identify the instance that has the fewest active connections. Configure the script to read from that instance to report the total new entries.
Answers
A.
Add functionality to the script to identify the instance that has the fewest active connections. Configure the script to read from that instance to report the total new entries.
B.
Create a read replica of the database. Configure the script to query only the read replica to report the total new entries.
Answers
B.
Create a read replica of the database. Configure the script to query only the read replica to report the total new entries.
C.
Instruct the development team to manually export the new entries for the day in the database at the end of each day.
Answers
C.
Instruct the development team to manually export the new entries for the day in the database at the end of each day.
D.
Use Amazon ElastiCache to cache the common queries that the script runs against the database.
Answers
D.
Use Amazon ElastiCache to cache the common queries that the script runs against the database.
Suggested answer: B

Explanation:

A read replica is a copy of the primary database that supports read-only queries. By creating a read replica, you can offload the read workload from the primary database and improve its performance. The script can query the read replica without affecting the critical application that uses the primary database. This solution also has the least operational overhead, as you do not need to modify the script, export the data manually, or manage a cache cluster.Reference:

Working with PostgreSQL, MySQL, and MariaDB Read Replicas

Amazon RDS Performance Insights

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asked 16/09/2024
Mithun E
50 questions
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