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Question 870 - SAA-C03 discussion

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A company runs a payment processing system in the AWS Cloud Sometimes when a payment fails because of insufficient funds or technical issues, users attempt to resubmit the payment. Sometimes payment resubmissions invoke multiple payment messages for the same payment ID.

A solutions architect needs to ensure that the payment processing system receives payment messages that have the same payment ID sequentially, according to when the messages were generated. The processing system must process the messages in the order in which the messages are received. The solution must retain all payment messages for 10 days for analytics.

Which solutions will meet these requirements? (Select TWO.)

A.

Write the payment messages to an Amazon DynamoDB table that uses the payment ID as the partition key.

Answers
A.

Write the payment messages to an Amazon DynamoDB table that uses the payment ID as the partition key.

B.

Write the payment messages to an Amazon Kinesis data stream that uses the payment ID as the partition key.

Answers
B.

Write the payment messages to an Amazon Kinesis data stream that uses the payment ID as the partition key.

C.

Write the payment messages to an Amazon ElastiCache for Memcached cluster that uses the payment ID as the key

Answers
C.

Write the payment messages to an Amazon ElastiCache for Memcached cluster that uses the payment ID as the key

D.

Write the payment messages to an Amazon Simple Queue Service (Amazon SQS) queue. Set the message attribute to use the payment ID.

Answers
D.

Write the payment messages to an Amazon Simple Queue Service (Amazon SQS) queue. Set the message attribute to use the payment ID.

E.

Write the payment messages to an Amazon Simple Queue Service (Amazon SQS) FIFO queue Set the message group to use the payment ID.

Answers
E.

Write the payment messages to an Amazon Simple Queue Service (Amazon SQS) FIFO queue Set the message group to use the payment ID.

Suggested answer: B, E

Explanation:

Both Amazon Kinesis and SQS FIFO queues ensure the sequential processing of messages. By using the payment ID as the partition key in Kinesis or as the message group in the SQS FIFO queue, messages are processed in order. Both solutions also allow for long-term retention (up to 10 days) of messages, making them suitable for this payment processing use case.

Option A (DynamoDB): DynamoDB does not guarantee message ordering for real-time processing.

Option C (ElastiCache): ElastiCache is for caching, not suitable for sequential message processing.

Option D (Standard SQS queue): A standard SQS queue does not guarantee ordering of messages.

AWS

Reference:

Amazon Kinesis

Amazon SQS FIFO Queues

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asked 27/10/2024
Manuel Jong
43 questions
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