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An ecommerce company runs a multi-tier application on AWS.

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An ecommerce company runs a multi-tier application on AWS. The frontend and backend tiers both run on Amazon EC2 instances. The database tier runs on an Amazon RDS for MySQL DB instance. The backend tier communicates with the RDS DB instance.

The application makes frequent calls to return identical datasets from the database. The frequent calls on the database cause performance slowdowns. A solutions architect must improve the performance of the application backend.

Which solution will meet this requirement?

A.

Configure an Amazon Simple Notification Service (Amazon SNS) topic between the EC2 instances and the RDS DB instance.

B.

Configure an Amazon ElastiCache (Redis OSS) cache. Configure the backend EC2 instances to read from the cache.

C.

Configure an Amazon DynamoDB Accelerator (DAX) cluster. Configure the backend EC2 instances to read from the cluster.

D.

Configure Amazon Data Firehose to stream the calls to the database.

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