connecting-lambda-to-dynamodb
Connects an AWS Lambda function to DynamoDB with IAM roles, stream event source mapping, and read/write permissions. Use when setting up Lambda-DynamoDB integration, processing DynamoDB stream events, or deploying serverless event-driven architectures.
Works with
--- name: connecting-lambda-to-dynamodb description: Connects an AWS Lambda function to DynamoDB with IAM roles, stream event source mapping, and read/write permissions. Use when setting up Lambda-DynamoDB integration, processing DynamoDB stream events, or deploying serverless event-driven architectures. license: Apache-2.0 --- # Connecting Lambda to DynamoDB ## Overview Domain expertise for connecting AWS Lambda functions to DynamoDB tables, including IAM execution role creation, function deployment, DynamoDB stream configuration, and event source mapping setup. ## Connect a Lambda function to DynamoDB To set up end-to-end Lambda-DynamoDB integration with IAM roles, streams, and event source mapping, follow the procedure exactly. See [Lambda-DynamoDB connection procedure](references/lambda-dynamodb-connection.md). ## Troubleshooting ### Lambda function not triggering Verify the event source mapping is active, DynamoDB streams are enabled with the correct view type, and the execution role has proper permissions. See the full [procedure](references/lambda-dynamodb-connection.md) for details. ### Permission denied errors Check the IAM role has `AWSLambdaDynamoDBExecutionRole` attached and the trust policy allows Lambda to assume it. ### Function timeout issues Increase the timeout setting or adjust the batch size in the event source mapping.
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