Multiple ChoiceDesign Resilient Architectures
Question 7. A company is building an ecommerce web service on AWS. The web service sends information about new orders to an Amazon API Gateway REST API for processing. The company wants to eliminate duplicate orders within a 5-minute processing window. Which solution will meet this requirement with the LEAST amount of development effort?
A. Configure API Gateway to send a message to an Amazon SNS topic when API Gateway receives an order. Create a filter policy for the SNS topic to deduplicate orders. Subscribe an AWS Lambda function to the SNS topic to process filtered results.
B. Configure API Gateway to send a message to an Amazon SQS FIFO queue when API Gateway receives an order. Include a MessageDeduplicationId token in the order requests. Configure the queue to invoke an AWS Lambda function for processing.
C. Use API Gateway integrations to send messages to an Amazon SQS standard queue. Include OrderID and Timestamp attributes in the order requests. Use an AWS Lambda function to consume the queue. Use the attributes to discard duplicate orders.
D. Use an API Gateway integration to send messages to an Amazon SQS standard queue. Configure an AWS Lambda function to process the queue. Include a MessageDeduplicationId token in the order requests.
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