AWS Certified Data Analytics Specialty 2021 - Hands-On! - Amazon DynamoDB Time to Live (TTL)

The video tutorial explains how to use the Time to Live (TTL) feature in DynamoDB to manage data expiration. TTL allows automatic deletion of expired items without using write or read capacity units. The tutorial covers enabling TTL, setting up epoch timestamps, and managing data expiration to adhere to regulatory norms and optimize storage. It also discusses recovering deleted items using DynamoDB streams.

What is the primary purpose of the TTL feature in DynamoDB?

• To increase read and write capacity

• To enhance data encryption

• To automatically delete expired data

• To improve query performance

How does enabling TTL in DynamoDB help with regulatory compliance?

• By encrypting data at rest

• By ensuring data is only stored for a specified duration

• By providing audit logs

• By increasing data retrieval speed

What is the first step in configuring TTL for a DynamoDB table?

• Creating a new table

• Adding a new column for expiration

• Increasing read capacity

• Enabling encryption

What type of value is used to set the expiration time in the TTL column?

• Unix epoch time

• RFC 2822 date format

• Milliseconds since epoch

• ISO 8601 date format

What happens when you run a preview of TTL settings in DynamoDB?

• It increases the table's read capacity

• It encrypts the expired items

• It shows which items will expire based on the current settings

• It deletes the expired items immediately