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Amazon DVA-C02 Exam - Topic 1 Question 53 Discussion

A developer is building a microservice that uses AWS Lambda to process messages from an Amazon Simple Queue Service (Amazon SQS) standard queue. The Lambda function calls external APIs to enrich the SOS message data before loading the data into an Amazon Redshift data warehouse. The SOS queue must handle a maximum of 1.000 messages per second.During initial testing, the Lambda function repeatedly inserted duplicate data into the Amazon Redshift table. The duplicate data led to a problem with data analysis. All duplicate messages were submitted to the queue within 1 minute of each other.How should the developer resolve this issue?
A) Create an SOS FIFO queue. Enable message deduplication on the SOS FIFO queue.
B) Reduce the maximum Lambda concurrency that the SOS queue can invoke.
C) Use Lambda's temporary storage to keep track of processed message identifiers.
D) Configure a message group ID for every sent message. Enable message deduplication on the SQS standard queue.

Amazon DVA-C02 Exam - Topic 1 Question 53 Discussion

Actual exam question for Amazon's DVA-C02 exam
Question #: 53
Topic #: 1
[All DVA-C02 Questions]

A developer is building a microservice that uses AWS Lambda to process messages from an Amazon Simple Queue Service (Amazon SQS) standard queue. The Lambda function calls external APIs to enrich the SOS message data before loading the data into an Amazon Redshift data warehouse. The SOS queue must handle a maximum of 1.000 messages per second.

During initial testing, the Lambda function repeatedly inserted duplicate data into the Amazon Redshift table. The duplicate data led to a problem with data analysis. All duplicate messages were submitted to the queue within 1 minute of each other.

How should the developer resolve this issue?

Show Suggested Answer Hide Answer
Suggested Answer: A

by Cathrine at Jul 13, 2025, 11:33 PM

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Katy
8 months ago
Reducing Lambda concurrency won't fix the root problem.
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Suzi
9 months ago
Wait, can you really deduplicate in a standard queue?
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Marshall
9 months ago
A FIFO queue with deduplication is the way to go!
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Mattie
9 months ago
Definitely option A! It solves the duplicate issue directly.
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Tayna
9 months ago
I'm surprised they didn't catch the duplicates earlier!
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Elfriede
9 months ago
I think option D is a bit confusing. Message group IDs are for FIFO queues, right? I’m not sure if they apply to standard queues.
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Gianna
10 months ago
I practiced a similar question about message processing, and I think using temporary storage to track processed messages could work. So, option C sounds plausible.
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Shawna
10 months ago
I'm not entirely sure, but reducing Lambda concurrency seems like it could help. Maybe option B? But I feel like it doesn't directly address the duplicates.
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Mollie
10 months ago
I remember we discussed FIFO queues in class, and how they can help with deduplication. I think option A might be the right choice.
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Shawnta
10 months ago
Hmm, using Lambda's temporary storage to track processed messages could be an interesting solution, but I'm not sure if that's the most efficient way to handle this. I'll need to weigh the pros and cons of each option.
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Willodean
11 months ago
I'm pretty confident I know the right approach here. Creating an SQS FIFO queue and enabling message deduplication seems like the most straightforward way to solve this problem.
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Ahmad
11 months ago
I'm a bit confused by the question. Does the Lambda function need to be modified, or is the solution all about the SQS queue configuration?
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Georgene
11 months ago
Okay, I think I've got a good strategy here. I'll focus on the SQS queue settings and see if I can find a way to deduplicate the messages.
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Dustin
11 months ago
Hmm, this seems like a tricky one. I'll need to carefully consider the options to avoid any more data duplication issues.
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Alfred
1 year ago
Haha, I bet the developer is cursing the SQS standard queue right about now. Option D seems like the logical choice to handle those pesky duplicates.
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Toi
1 year ago
Hold up, what about creating an SQS FIFO queue and enabling deduplication (Option A)? That could be a more robust solution than relying on temporary storage.
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Zita
12 months ago
User 2: D) Configure a message group ID for every sent message. Enable message deduplication on the SQS standard queue.
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Alona
12 months ago
User 1: A) Create an SOS FIFO queue. Enable message deduplication on the SOS FIFO queue.
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Samuel
1 year ago
That's a good point, Leota. It could help keep track of processed messages and avoid duplicates.
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Leota
1 year ago
But wouldn't using Lambda's temporary storage as suggested in option C be more efficient?
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Laurel
1 year ago
I'm not sure about that. Option D also seems like a valid choice to prevent duplicate data.
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Samuel
1 year ago
I agree with Leota. Using an SOS FIFO queue with message deduplication seems like the best solution.
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Leota
1 year ago
I think the developer should go with option A.
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Tarra
1 year ago
Wait, did you say 1,000 messages per second? That's a lot of data! I hope the developer's laptop can handle all the API calls without catching on fire.
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Alysa
1 year ago
Option C looks like the way to go. Using Lambda's temporary storage to track processed messages seems like a clean and efficient solution.
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Talia
1 year ago
I agree, that sounds like a good approach to prevent duplicate data from being loaded into Redshift.
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Aliza
1 year ago
Option C looks like the way to go. Using Lambda's temporary storage to track processed messages seems like a clean and efficient solution.
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