Amazon Exam DVA-C02 Topic 7 Question 42 Discussion

Actual exam question for Amazon's DVA-C02 exam

Question #: 42
Topic #: 7

In a move toward using microservices, a company's management team has asked all development teams to build their services so that API requests depend only on that service's data store. One team is building a Payments service which has its own database; the service needs data that originates in the Accounts database. Both are using Amazon DynamoDB.

What approach will result in the simplest, decoupled, and reliable method to get near-real time updates from the Accounts database?

AUse AWS Glue to perform frequent ETL updates from the Accounts database to the Payments database.

BUse Amazon ElastiCache in Payments, with the cache updated by triggers in the Accounts database.

CUse Amazon Data Firehose to deliver all changes from the Accounts database to the Payments database.

DUse Amazon DynamoDB Streams to deliver all changes from the Accounts database to the Payments database.

Show Suggested Answer

Suggested Answer: D

by Zoila at Nov 14, 2024, 08:33 AM

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Cristy

6 months ago

Wow, using triggers in the Accounts database to update ElastiCache? Talk about an overly complex solution. D is the way to go, folks.

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Jacquelyne

5 months ago

No need to overcomplicate things with triggers and caches.

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Ula

5 months ago

It definitely simplifies the process and keeps things decoupled.

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Brice

6 months ago

Yeah, using DynamoDB Streams to deliver changes makes a lot of sense.

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Angelo

6 months ago

I agree, D seems like the simplest and most reliable option.

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Nicholle

7 months ago

I'm not sure, but I think option B could also work well by using ElastiCache to update the cache in Payments.

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Clarinda

7 months ago

I agree with Lenita, using DynamoDB Streams will ensure near-real time updates without the need for complex ETL processes.

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Blondell

7 months ago

Haha, who needs real-time updates when you can just have the Payments team call the Accounts team every time they need data? Option D is the way to go!

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