Trigger AWS Lambda functions from Amazon RDS for SQL Server database events

This article explains how to trigger AWS Lambda functions from Amazon RDS for SQL Server database events using a serverless integration pattern.

• Publish RDS SQL Server error logs to CloudWatch Logs for visibility
• Create stored procedures using RAISERROR to write custom messages to ERRORLOG
• Use CloudWatch subscription filters to detect ##LambdaCallBack## markers in logs
• Implement fan-out architecture with SNS and SQS for decoupling and cost optimization
• Deploy Lambda functions (Callback, Destination-A, Destination-B) via AWS CDK
• SNS subscription filter policies route messages to correct SQS queues by Lambda ARN
• SQS acts as message buffer, triggering Destination-Lambda asynchronously with controlled concurrency
• Supports automated workflows, real-time notifications, API calls, and business process orchestration
• Sensitive data must be encrypted before passing to sp_invoke_lambda procedure

This solution enables event-driven serverless architectures by integrating RDS database operations with Lambda functions while maintaining separation of concerns and cost efficiency.