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Hello Dash,
Thank you for your reply.
The requirement on this question is to have the lowest latency possible by “multiple AWS regions to process the sales and financial transactions on the region closest to the users” in which case there is a need for the read/write transaction to be done on any region.
Based on the options, the Global DynamoDB table will fulfill this requirement since there will be a database on the selected region and it can accept read/write DB requests on any of those regions while ensuring data is synced on all regions.
Thus, the answer will be “Create a Global DynamoDB table with replica tables across several AWS regions that you prefer. In each local region, store the individual transactions to a DynamoDB replica table in the same region. Any changes made in one of the replica tables will automatically be replicated across all other tables.”
“But, I really can’t find any information, which explains how DynamoDB can be used for a Sales and Financial Transaction processing.”
>> The scenario explained in this question is just theoretical, for illustrative purposes only. This implementation for the Financial Transaction processing may depend on how the Developer will program the application and its logic on how it would read/write to the DynamoDB database.
Hope this helps.
Let us know if you need further assistance. The Tutorials Dojo team is dedicated to helping you pass your AWS exam!
Regards,
Kenneth Samonte @ Tutorials Dojo
