A media company is working on migrating its various on-premises products and services to the AWS platform. In one web service, MongoDB was used to store user subscription information. The AWS cloud engineer has migrated this NoSQL database to DynamoDB in AWS.

Answer options:

A.In Java AWS SDK, implement a retry mechanism to retry the request when the exception ProvisionedThroughputExceededException happens.
B.Open the Amazon CloudWatch console and view performance metrics for provisioned throughput vs. consumed throughput.
C.In the CloudWatch console and view the ProvisionedThroughputExceededException metrics to understand when it happens.
D.Increase the provisioned read, write capacity, and monitor the log system.

Correct AnswerB, D
DynamoDB can return various exceptions with different error messages and codes. The reference is in https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Programming.Errors.html.
Option A is incorrect: Because the AWS SDKs for DynamoDB automatically retry requests that receive this exception. The request to DynamoDB is eventually successful unless the retry queue is too large to finish.
Option B is CORRECT: Because the CloudWatch metrics can tell the difference between provisioned capacity and consumed capacity. It helps understand the proper value to the provisioned capacity.
Option C is incorrect: Because there are no ProvisionedThroughputExceededException metrics for the DynamoDB table.
Option D is CORRECT: Because the straightforward way is to increase the provisioned capacity and monitor if it can help resolve the problem.