Exam AWS Certified Developer Associate topic 1 question 192 discussion

Exam question from Amazon's AWS Certified Developer Associate

Question #: 192
Topic #: 1

[All AWS Certified Developer Associate Questions]

A developer maintains a critical business application that uses Amazon DynamoDB as the primary data store. The DynamoDB table contains millions of documents and receives 30-60 requests each minute. The developer needs to perform processing in near-real time on the documents when they are added or updated in the DynamoDB table.

How can the developer implement this feature with the LEAST amount of change to the existing application code?

A. Set up a cron job on an Amazon EC2 instance. Run a script every hour to query the table for changes and process the documents.
B. Enable a DynamoDB stream on the table. Invoke an AWS Lambda function to process the documents.
C. Update the application to send a PutEvents request to Amazon EventBridge (Amazon CloudWatch Events). Create an EventBridge (CloudWatch Events) rule to invoke an AWS Lambda function to process the documents.
D. Update the application to synchronously process the documents directly after the DynamoDB write.

Show Suggested Answer

Suggested Answer: B 🗳️

by k1kavi1 at Nov. 25, 2022, 10 a.m.

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rcaliandro

2 years, 1 month ago

Selected Answer: B

We do not need to add a CloudWatch event but we can also directly enable DynamoDB data stream to call a lambda function as soon as one element in the table is added, updated or deleted. I'll go with B

upvoted 1 times

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