connecting-lambda-to-dynamodb

connecting-lambda-to-dynamodb packages domain expertise for wiring an AWS Lambda function to a DynamoDB table end to end. It addresses the common serverless integration problem of correctly setting up IAM execution roles, deploying the function, enabling DynamoDB streams, and configuring event source mapping so that stream events reliably trigger the function. It is intended for use when building Lambda-DynamoDB integrations, processing DynamoDB stream events, or deploying event-driven serverless architectures.

The skill centers on a single authoritative procedure that covers IAM execution role creation, function deployment, DynamoDB stream configuration, and event source mapping setup, and it instructs following that procedure exactly (documented in references/lambda-dynamodb-connection.md). It also includes a troubleshooting section for the most common failure modes: a Lambda function not triggering (verify the event source mapping is active, that DynamoDB streams are enabled with the correct view type, and that the execution role has proper permissions), permission denied errors (confirm the IAM role has AWSLambdaDynamoDBExecutionRole attached and the trust policy allows Lambda to assume it), and function timeout issues (increase the timeout setting or adjust the batch size in the event source mapping).

It targets AWS developers and cloud engineers building serverless, event-driven systems. The guidance is grounded in AWS primitives (IAM roles and trust policies, DynamoDB streams and view types, event source mappings, and the AWSLambdaDynamoDBExecutionRole managed policy), so users need appropriate AWS permissions to create roles, deploy functions, and configure streams. For the full step-by-step setup, the skill defers to its referenced connection procedure.