aws-lambda

Create a function from a ZIP file

$ aws lambda create-function --function-name [my-function] --runtime python3.11 --role [arn:aws:iam::account:role/lambda-role] --handler [index.handler] --zip-file fileb://[function.zip]

$ aws lambda invoke --function-name [my-function] --payload '{"key": "value"}' response.json

$ aws lambda list-functions

$ aws lambda update-function-code --function-name [my-function] --zip-file fileb://[function.zip]

$ aws lambda update-function-configuration --function-name [my-function] --memory-size 512 --timeout 30

$ aws lambda create-event-source-mapping --function-name [my-function] --event-source-arn [arn:aws:sqs:region:account:queue-name]

$ aws lambda publish-version --function-name [my-function]

aws lambda command [options]

aws lambda is the AWS CLI interface for AWS Lambda, a serverless compute service that runs code in response to events without provisioning or managing servers. Lambda automatically scales and handles high availability.
Lambda supports multiple runtimes including Python, Node.js, Java, Go, Ruby, .NET, and custom runtimes. Functions can be triggered by AWS services, HTTP requests via API Gateway, or direct invocation.

create-function

Create a new Lambda function

Delete a function

Execute a function synchronously

List all functions

Deploy new function code

Change function settings

Create an immutable version snapshot

Create a pointer to a function version

Connect function to event source

Create a reusable code layer

Grant invoke access to other services

Functions have a 15-minute maximum timeout. Deployment package size is limited to 50MB zipped (250MB unzipped). Cold starts add latency on first invocation. Concurrent execution limits apply per account and region. VPC-connected functions may have longer cold starts.

AWS Lambda launched in November 2014 as the first major serverless compute service. It initially supported only Node.js. Python support came in 2015, and custom runtimes in 2018. Lambda@Edge for CloudFront, container image support, and Lambda URLs have expanded its use cases significantly.

aws(1), aws-apigateway(1), aws-events(1)