Point-in-time recovery (PITR) in DynamoDB - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Point-in-time recovery (PITR) in DynamoDB?

PITR is a feature that lets you restore your DynamoDB table to any second in the past 35 days, helping you recover from accidental writes or deletes.

beginner

How long does DynamoDB keep backups for PITR?

DynamoDB keeps continuous backups for the last 35 days, allowing recovery to any point within that time frame.

intermediate

Does enabling PITR affect the performance of your DynamoDB table?

No, enabling PITR does not impact the performance or availability of your DynamoDB table.

intermediate

What is the difference between PITR and on-demand backups in DynamoDB?

PITR provides continuous backups for 35 days automatically, while on-demand backups are manual snapshots taken at a specific time.

beginner

How do you enable Point-in-time recovery (PITR) on a DynamoDB table?

You enable PITR by turning it on in the DynamoDB console, AWS CLI, or SDK for the specific table you want to protect.

What is the maximum time range you can recover a DynamoDB table using PITR?

A 35 days

B 7 days

C 90 days

D 1 year

PITR allows recovery to any second within the last 35 days.

Does enabling PITR slow down your DynamoDB table's read/write operations?

A No, it does not affect performance

B Yes, it slows down reads

C Only during backups

D Yes, it slows down writes

PITR runs in the background and does not impact table performance.

Which of the following is true about PITR?

A It requires manual snapshots

B It only backs up data once a day

C It automatically backs up data continuously

D It cannot restore deleted tables

PITR continuously backs up your table data automatically.

How do you restore a DynamoDB table using PITR?

A By running a SQL restore command

B By overwriting the existing table directly

C By exporting data to S3

D By creating a new table from a backup at a chosen time

Restoration creates a new table with data from the chosen point in time.

What happens if you disable PITR on a DynamoDB table?

A All backups are deleted immediately

B You lose the ability to restore to any point in the past 35 days

C The table is deleted

D The table becomes read-only

Disabling PITR stops continuous backups and you can no longer restore to past points.

Explain what Point-in-time recovery (PITR) is and why it is useful in DynamoDB.

Think about how PITR helps fix mistakes without losing all data.

Describe the difference between PITR and on-demand backups in DynamoDB.

Consider how often backups happen and how you create them.