Question

An Amazon DynamoDB table is populated with a large amount of data from an application capturing client data from various servers across various regions.

Which of the following is a preferred option for deletion of old items in a DynamoDB table?

A. Schedule a cron Job during off peak hours to delete unwanted items.

B. Run Periodic jobs to delete old items.

C. Pre-Create a DynamoDB table with specific time.

D. Enable TTL on each item to automatically delete old items.

Answer 1

Correct Answer - D.

Amazon DynamoDB TTL can delete items in a DynamoDB table based upon the TTL values you specify.

TTL is specified as a timestamp for items in a table.

This is an easier way of deleting old items & thus freeing up space & saving cost.

Option A is incorrect as although this will work.

But additional admin work will be required to create & run jobs.

Option B is incorrect as this will require additional manual jobs to run to delete old items.

Option C is incorrect.

This will require adding additional logic in an application to switch over to new tables after a specific time for which DynamoDB tables are pre-created.