A company is designing a serverless application using AWS AppSync and Amazon DynamoDB. The application requires real-time updates to be pushed to thousands of connected mobile clients whenever data in DynamoDB changes. Which combination of features should be used? (Select TWO)

Answer options:

Enable DynamoDB Streams on the table.

Use Amazon SNS to send push notifications to the mobile clients.

Use AppSync Subscriptions to push real-time updates to the clients.

Configure API Gateway WebSockets.

Use Amazon Kinesis Data Streams.

Poll the DynamoDB table every second from the mobile clients.

How to approach this question

Identify the GraphQL real-time feature and the database change capture feature.

Full Answer

DynamoDB Streams capture changes to the database. AWS AppSync Subscriptions use WebSockets to automatically push these real-time data updates to connected GraphQL clients.

Common mistakes

Choosing API Gateway WebSockets when AppSync is already being used.

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Practice the full AWS Solutions Architect Professional SAP-C02 Practice Exam 7

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