DynamoDB Streams overview in AWS - Mini Project: Build & Apply

DynamoDB Streams overview

📖 Scenario: You are working on a cloud project where you need to track changes in a DynamoDB table. DynamoDB Streams help capture these changes in real-time.

🎯 Goal: Create a DynamoDB table with streams enabled, configure the stream view type, and verify the stream settings.

📋 What You'll Learn

Create a DynamoDB table named Orders with a primary key OrderId of type string.

Enable DynamoDB Streams on the Orders table with the stream view type set to NEW_AND_OLD_IMAGES.

Write an AWS CLI command or AWS SDK code snippet to describe the table and confirm streams are enabled.

💡 Why This Matters

🌍 Real World

DynamoDB Streams are used to capture and react to changes in your database in real-time, useful for auditing, replication, or triggering workflows.

💼 Career

Understanding DynamoDB Streams is important for cloud engineers and developers working with AWS to build event-driven and reactive applications.

1

Create the DynamoDB table

Create a DynamoDB table named Orders with a primary key called OrderId of type string.

AWS

# Your AWS CLI command or AWS SDK code to create the table goes here

Need a hint?

Use the AWS CLI create-table command with the correct attribute definitions and key schema.

2

Enable DynamoDB Streams

Update the Orders table to enable DynamoDB Streams with the stream view type set to NEW_AND_OLD_IMAGES.

AWS

aws dynamodb create-table --table-name Orders --attribute-definitions AttributeName=OrderId,AttributeType=S --key-schema AttributeName=OrderId,KeyType=HASH --provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5
# Your AWS CLI command to enable streams goes here

Need a hint?

Use the AWS CLI update-table command with the --stream-specification option.

3

Describe the table to verify streams

Write an AWS CLI command to describe the Orders table and confirm that DynamoDB Streams are enabled with the correct stream view type.

AWS

aws dynamodb create-table --table-name Orders --attribute-definitions AttributeName=OrderId,AttributeType=S --key-schema AttributeName=OrderId,KeyType=HASH --provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5
aws dynamodb update-table --table-name Orders --stream-specification StreamEnabled=true,StreamViewType=NEW_AND_OLD_IMAGES
# Your AWS CLI command to describe the table goes here

Need a hint?

Use the AWS CLI describe-table command to check the table details.

4

Check the stream settings in the output

Verify that the output of the describe-table command includes StreamEnabled set to true and StreamViewType set to NEW_AND_OLD_IMAGES.

AWS

aws dynamodb create-table --table-name Orders --attribute-definitions AttributeName=OrderId,AttributeType=S --key-schema AttributeName=OrderId,KeyType=HASH --provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5
aws dynamodb update-table --table-name Orders --stream-specification StreamEnabled=true,StreamViewType=NEW_AND_OLD_IMAGES
aws dynamodb describe-table --table-name Orders
# Your code or comment to confirm stream settings goes here

Need a hint?

Look for the stream settings in the table description output.