SAA-C03 Q99 · Database

Question

A company has an application that uses an Amazon DynamoDB table for storage. A solutions architect discovers that many requests to the table are not returning the latest data. The company's users have not reported any other issues with database performance. Latency is in an acceptable range. Which design change should the solutions architect recommend?

Accepted Answer

**Answer C: Request strongly consistent reads for the table.**

**Step-by-step reasoning:**

1. **Problem identification**: The application is 'not returning the latest data' — this is the classic symptom of **eventually consistent reads**, which is DynamoDB's default read behavior.

2. **How DynamoDB consistency works**: DynamoDB replicates data across multiple storage nodes in a Region. When you write data, it's acknowledged after writing to a quorum of nodes. Eventually consistent reads may hit a node that hasn't received the latest write yet, returning stale data.

3. **Strongly consistent reads** guarantee that DynamoDB returns the most up-to-date version of the data by reading from the leader node. This directly solves the 'not returning latest data' problem.

4. **No other issues re

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