AWS Certified Data Engineer Associate · Free Practice Question Medium
Question 7
A data engineer is using DynamoDB with DAX enabled for a high-throughput application. However, during peak times, they notice some requests are being throttled. What is the most likely cause of this throttling, and how can it be mitigated?
-
A
The DAX cluster has reached its request capacity; add more nodes to the DAX cluster.
-
B
The DynamoDB table’s provisioned throughput is too low; enable auto-scaling for the table.
-
C
The application is making too many write operations; increase the write capacity of the DynamoDB table.
-
D
The DAX cache is full; clear the cache to improve performance.
Reveal correct answer
Correct answer: A
A.
In a DAX cluster, throttling can occur if the request rate exceeds the capacity of the DAX cluster itself. Adding more nodes to the cluster increases its capacity and can help mitigate this issue.
B.
Throttling in this case is related to the DAX cluster, not the DynamoDB table itself. The table’s throughput is not the issue.
C.
This issue is related to read operations and the DAX cluster’s capacity, not the write capacity of the table.
D.
Clearing the cache would not resolve throttling issues. The problem lies in exceeding the request rate for the DAX cluster, not the cache being full.
Discussion
Think the marked answer is wrong, or have a better explanation? Share it below — comments appear after review.
