SAP-C02 Design for New Solutions Practice Question
A company is designing a multi-region active-active application using Amazon DynamoDB global tables. The application requires strong consistency reads. However, global tables only support eventual consistency. What should the solutions architect do to meet the requirement?
⚠ Common exam trap
Many exam-takers assume DynamoDB global tables can be configured for strong consistency reads, but the service explicitly only supports eventual consistency across regions, making application-level handling the only viable solution.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Design the application to handle eventual consistency using conditional writes and application logic.
DynamoDB global tables inherently replicate data asynchronously across regions, which means they only support eventual consistency. To meet strong consistency requirements in an active-active multi-region setup, the application must be designed to handle eventual consistency by using conditional writes and application logic to manage conflicts and ensure data integrity. This approach acknowledges the technical limitation of global tables while still achieving the desired consistency level through careful application design.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Design the application to handle eventual consistency using conditional writes and application logic.
Why this is correct
Application can manage consistency.
- ✗
Enable strong consistency in the global table configuration.
Why it's wrong here
Global tables do not support strong consistency.
- ✗
Use DynamoDB Streams to replicate data to another region with strong consistency.
Why it's wrong here
Streams do not provide strong consistency.
- ✗
Use DynamoDB Accelerator (DAX) to provide strong consistency reads.
Why it's wrong here
DAX does not provide strong consistency across regions.
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