aws-cloudformation-lambda

# AWS CloudFormation Lambda Functions ## Overview Create production-ready Lambda functions using CloudFormation templates with validation and deployment workflows. ## When to Use - Creating Lambda functions with CloudFormation - Configuring event sources (S3, SQS, DynamoDB, Kinesis) - Implementing Lambda layers and cold start optimization - Integrating Lambda with API Gateway - Deploying Lambda infrastructure with validation ## Deployment Workflow Always follow this deployment workflow: ### 1. Validate Template ```bash aws cloudformation validate-template --template-body file://template.yaml ``` ### 2. Deploy Stack ```bash aws cloudformation deploy \ --template-file template.yaml \ --stack-name my-lambda-stack \ --capabilities CAPABILITY_IAM \ --parameter-overrides Environment=prod ``` ### 3. Monitor Stack Events ```bash aws cloudformation describe-stack-events \ --stack-name my-lambda-stack \ --query 'StackEvents[?ResourceStatus==`CREATE_FAILED`||ResourceStatus==`UPDATE_FAILED`]' ``` ### 4. Verify Resources ```bash aws lambda get-function --function-name my-lambda-stack-function aws cloudformation describe-stacks --stack-name my-lambda-stack \ --query 'Stacks[0].StackStatus' ``` ### 5. Rollback on Failure ```bash aws cloudformation delete-stack --stack-name my-lambda-stack aws logs describe-log-groups --log-group-name-prefix "/aws/lambda/my-lambda" ``` ## Instructions Follow these steps to create Lambda functions with CloudFormation: ### 1. Define...