Amazon DVA-C02 Exam - 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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Dottie

5 months ago

C is interesting, but I feel like it might not be as efficient as D.

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Graciela

5 months ago

Wait, can DynamoDB Streams really handle near-real time updates? Sounds too good to be true!

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Rachael

5 months ago

B could work too, but it adds complexity with caching.

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Daren

5 months ago

Not sure about that, A seems more reliable for ETL processes.

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Selene

6 months ago

I think D is the best choice. DynamoDB Streams are perfect for this!

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Dannette

6 months ago

I'm leaning towards DynamoDB Streams since it seems like the most straightforward way to get updates directly from the Accounts database without too much overhead.

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Bettyann

6 months ago

I practiced a similar question where we discussed caching strategies. I wonder if ElastiCache would be a good fit here, but it might not be as real-time as needed.

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Tonja

6 months ago

I think using AWS Glue for ETL might be too heavy for this scenario. It feels like it could introduce delays, right?

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Sunny

6 months ago

I remember studying about using DynamoDB Streams for real-time updates, but I'm not entirely sure how it compares to the other options.

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Timothy

6 months ago

I think I'm going to go with option C and use Data Firehose. That seems like it would provide a nice, decoupled way to get the data from Accounts into Payments.

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Alexis

6 months ago

Option D with DynamoDB Streams seems like it could work, but I'm not sure how reliable and low-latency that would be compared to the other options.

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Lucia

6 months ago

I'm leaning towards option B with ElastiCache. That way the Payments service can just query the cache without having to worry about the Accounts database directly.

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Leanna

6 months ago

Hmm, using DynamoDB Streams seems like it could be a good way to get near-real time updates, but I'm not sure if that's the simplest or most decoupled solution.

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Tiara

7 months ago

This looks like a tricky one. I'll need to think through the different options carefully to figure out the best approach.

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Cristy

1 year 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

1 year ago

No need to overcomplicate things with triggers and caches.

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Ula

1 year ago

It definitely simplifies the process and keeps things decoupled.

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Brice

1 year ago

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

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Angelo

1 year ago

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

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Nicholle

1 year 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

1 year 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

1 year 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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