AWS Certified Database – Specialty — Question 134

A company is using Amazon DynamoDB global tables for an online gaming application. The game has players around the world. As the game has become more popular, the volume of requests to DynamoDB has increased significantly. Recently, players have reported that the game state is inconsistent between players in different countries. A database specialist observes that the ReplicationLatency metric for some of the replica tables is too high.
Which approach will alleviate the problem?

Answer options

• A. Configure all replica tables to use DynamoDB auto scaling.
• B. Configure a DynamoDB Accelerator (DAX) cluster on each of the replicas.
• C. Configure the primary table to use DynamoDB auto scaling and the replica tables to use manually provisioned capacity.
• D. Configure the table-level write throughput limit service quota to a higher value.

Correct answer: A

Explanation

The correct answer is A because configuring all replica tables to use DynamoDB auto scaling allows them to automatically adjust their capacity in response to the increasing request volume, which can help reduce ReplicationLatency. Options B and C do not directly address the issue of high replication latency, while option D relates to write throughput limits but does not resolve inconsistencies between replicas.