What should a Database Specialist recommend for this user?

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A user has a non-relational key-value database.The user is looking for a fully managed AWS service that will offload the administrative burdens of operating and scaling distributed databases.The solution must be cost-effective and able to handle unpredictable application traffic.

What should a Database Specialist recommend for this user?

Create an Amazon DynamoDB table with provisioned capacity mode

Create an Amazon DocumentDB cluster

Create an Amazon DynamoDB table with on-demand capacity mode

Create an Amazon Aurora Serverless DB cluster

Explanations:

Amazon DynamoDB with provisioned capacity requires manual scaling of read and write capacity units, which does not handle unpredictable traffic efficiently.

Amazon DocumentDB is a managed NoSQL document database compatible with MongoDB, not designed specifically for key-value storage, and may not be the most cost-effective solution for this use case.

Amazon DynamoDB with on-demand capacity mode automatically scales based on application traffic, making it cost-effective and ideal for unpredictable traffic while offloading administrative burdens.

Amazon Aurora Serverless is a relational database service, not a key-value store, and is not suited for this specific use case of a non-relational key-value database.

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