DynamodbHow-ToBeginner · 3 min read

How to Backup DynamoDB Table: Simple Steps and Example

To backup a DynamoDB table, use the CreateBackup API or AWS CLI command aws dynamodb create-backup. This creates an on-demand backup of your table that you can restore later if needed.

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Syntax

The basic syntax to create a backup of a DynamoDB table using AWS CLI is:

aws dynamodb create-backup --table-name <TableName> --backup-name <BackupName>

Where:

--table-name: The name of the DynamoDB table you want to backup.
--backup-name: A name you assign to the backup for identification.

Using AWS SDK (e.g., Python boto3), you call create_backup(TableName='TableName', BackupName='BackupName').

bash

aws dynamodb create-backup --table-name MyTable --backup-name MyTableBackup

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Example

This example shows how to create a backup of a DynamoDB table named Users using Python and boto3 SDK.

python

import boto3

# Create DynamoDB client
client = boto3.client('dynamodb')

# Create backup
response = client.create_backup(
    TableName='Users',
    BackupName='UsersBackup2024'
)

print('Backup ARN:', response['BackupDetails']['BackupArn'])

Output

Backup ARN: arn:aws:dynamodb:region:account-id:table/Users/backup/015f1234-5678-90ab-cdef-EXAMPLE11111

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Common Pitfalls

Common mistakes when backing up DynamoDB tables include:

Not specifying a unique BackupName, which can cause confusion.
Trying to backup a table that does not exist, resulting in errors.
Ignoring AWS service limits on backup frequency and storage costs.
Assuming backups are automatic; on-demand backups require explicit calls.

Always check the table name and backup name carefully before running the command.

bash

## Wrong: Missing backup name
aws dynamodb create-backup --table-name Users

## Right: Include backup name
aws dynamodb create-backup --table-name Users --backup-name UsersBackup2024

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Quick Reference

Command/Method	Description
aws dynamodb create-backup	Creates an on-demand backup of a DynamoDB table
boto3.client('dynamodb').create_backup()	SDK method to create backup programmatically
BackupName	Unique name to identify the backup
TableName	Name of the DynamoDB table to backup

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Key Takeaways

Use the CreateBackup API or AWS CLI to create on-demand backups of DynamoDB tables.

Always provide a unique backup name to identify your backups clearly.

Check that the table exists before attempting to backup to avoid errors.

Backups are not automatic; you must create them explicitly.

Monitor backup frequency and storage to control costs.