Amazon Exam DVA-C02 Topic 3 Question 39 Discussion

Actual exam question for Amazon's DVA-C02 exam

Question #: 39
Topic #: 3

An Amazon Simple Queue Service (Amazon SQS) queue serves as an event source for an AWS Lambda function In the SQS queue, each item corresponds to a video file that the Lambda function must convert to a smaller resolution The Lambda function is timing out on longer video files, but the Lambda function's timeout is already configured to its maximum value

What should a developer do to avoid the timeouts without additional code changes'?

AIncrease the memory configuration of the Lambda function

BIncrease the visibility timeout on the SQS queue

CIncrease the instance size of the host that runs the Lambda function.

DUse multi-threading for the conversion.

Show Suggested Answer

Suggested Answer: B

Visibility Timeout: When an SQS message is processed by a consumer (here, the Lambda function), it's temporarily hidden from other consumers. Visibility timeout controls this duration.

How It Helps:

Increase the visibility timeout beyond the maximum processing time your Lambda might typically take for long videos.

This prevents the message from reappearing in the queue while Lambda is still working, avoiding premature timeouts.

SQS Visibility Timeout:https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html

by Amber at Sep 15, 2024, 09:42 AM

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William

11 days ago

I'm not sure about that. I think the answer might be D) Use multi-threading for the conversion to speed up the process.

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Mitsue

11 days ago

I'm with Nobuko on this one. The visibility timeout is the most straightforward solution without additional code changes.

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Jeannetta

15 days ago

Haha, increasing the instance size of the host that runs the Lambda function? That's like throwing money at the problem instead of actually fixing it!

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Roxane

16 days ago

I agree with Nikita. Increasing the memory configuration can help the Lambda function process the video files faster.

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Susana

20 days ago

Using multi-threading for the conversion seems like an interesting idea. It could help the Lambda function process the videos more efficiently.

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Shenika

7 days ago

A) Increase the memory configuration of the Lambda function

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Nobuko

23 days ago

I think increasing the visibility timeout on the SQS queue is the way to go. That should give the Lambda function more time to process the longer video files without timing out.

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