Best Practices for Minimizing DynamoDB Latency Across Regions
Question
Your company is developing a solution that will make use of DynamoDB tables.
Due to the nature of the application, the data is needed across various regions across the world.
Which of the following would you, as the Sysops administrator for the company, implement to reduce the latency of requests to DynamoDB from different regions?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.Correct Answer: B.
The AWS Documentation mentions the following.
Amazon DynamoDB global tables provide a fully managed solution for deploying a multi-region, multi-master database without building and maintaining your own replication solution.
When you create a global table, you specify the AWS regions where you want the table to be available.
DynamoDB performs all of the necessary tasks to create identical tables in these regions and propagate ongoing data changes to all of them.
For more information on Global tables, please refer to the below URL-
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GlobalTables.htmlTo reduce the latency of requests to DynamoDB from different regions, the best solution is to enable global tables for DynamoDB. This option, denoted as B in the list of answers, is specifically designed to allow DynamoDB tables to span multiple AWS regions, thus reducing the latency for requests.
Enabling global tables ensures that the data in the table is automatically replicated across multiple regions, providing low-latency access to data from any region. With global tables, a single application can access the data from any region with the same low latency, without needing to route requests through a specific region.
In contrast, enabling Multi-AZ (A) only provides redundancy within a single region, and does not reduce latency for requests to DynamoDB from different regions. Enabling indexes (C) can improve the performance of queries on a single table, but it does not reduce the latency for requests from different regions. Increasing the read and write throughput for the table (D) can improve the performance of individual requests, but it does not address the latency issue for requests from different regions.
Therefore, the correct answer is B, enable global tables for DynamoDB.
