Listen to this Post
AWS has announced that DynamoDB Streams APIs now support AWS PrivateLink, enhancing private connectivity and enabling secure, event-driven application development without requiring internet access. This update simplifies building real-time applications while maintaining security and isolation within your AWS environment.
You Should Know:
1. Enabling DynamoDB Streams
To enable DynamoDB Streams on a table, use the AWS CLI:
aws dynamodb update-table \ --table-name YourTableName \ --stream-specification StreamEnabled=true,StreamViewType=NEW_AND_OLD_IMAGES
2. Setting Up a PrivateLink Endpoint for DynamoDB Streams
Create a VPC endpoint for DynamoDB Streams:
aws ec2 create-vpc-endpoint \ --vpc-id vpc-12345678 \ --service-name com.amazonaws.region.streams.dynamodb \ --route-table-ids rtb-12345678 \ --security-group-id sg-12345678
#### **3. Processing DynamoDB Streams with AWS Lambda**
Configure a Lambda function to process stream records:
import json
def lambda_handler(event, context):
for record in event['Records']:
print("Event ID: ", record['eventID'])
print("Event Name: ", record['eventName'])
print("DynamoDB Record: ", json.dumps(record['dynamodb'], indent=2))
#### **4. Verifying PrivateLink Connectivity**
Check endpoint connections:
aws ec2 describe-vpc-endpoints --vpc-endpoint-ids vpce-12345678
#### **5. Monitoring DynamoDB Streams**
Use CloudWatch to monitor stream metrics:
aws cloudwatch get-metric-statistics \ --namespace AWS/DynamoDB \ --metric-name SuccessfulRequestLatency \ --dimensions Name=TableName,Value=YourTableName \ --start-time $(date -u +"%Y-%m-%dT%H:%M:%SZ" --date="-5 minutes") \ --end-time $(date -u +"%Y-%m-%dT%H:%M:%SZ") \ --period 60 \ --statistics Average
### **What Undercode Say**
This update significantly improves DynamoDB’s event-driven architecture by ensuring secure, private data streaming. Developers can now build real-time applications without exposing traffic to the public internet. Additional AWS PrivateLink integrations (like S3, Kinesis, and RDS) further enhance hybrid cloud security.
For advanced use cases, consider combining DynamoDB Streams with:
– AWS Lambda for serverless processing
– Amazon Kinesis for large-scale stream analytics
– AWS Step Functions for orchestration
**Expected Output:**
{
"StreamEnabled": true,
"StreamViewType": "NEW_AND_OLD_IMAGES",
"VpcEndpointId": "vpce-12345678",
"LambdaFunctionStatus": "Active"
}
**Reference:**
Amazon DynamoDB Streams APIs now support AWS PrivateLink
References:
Reported By: Darryl Ruggles – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
