aws-lambda

# AWS Lambda Manage serverless functions on AWS Lambda. ## Environment Variables - `AWS_ACCESS_KEY_ID` / `AWS_SECRET_ACCESS_KEY` - AWS credentials - `AWS_DEFAULT_REGION` - Region (e.g. `us-east-1`) ## List functions ```bash aws lambda list-functions --query 'Functions[].{Name:FunctionName,Runtime:Runtime,Memory:MemorySize,Timeout:Timeout,Last:LastModified}' --output table ``` ## Get function details ```bash aws lambda get-function --function-name my-function | jq '{Runtime: .Configuration.Runtime, Handler: .Configuration.Handler, Memory: .Configuration.MemorySize, Timeout: .Configuration.Timeout, CodeSize: .Configuration.CodeSize, Env: .Configuration.Environment.Variables}' ``` ## Invoke function ```bash aws lambda invoke --function-name my-function \ --payload '{"key":"value"}' \ --cli-binary-format raw-in-base64-out \ /tmp/lambda-out.json && cat /tmp/lambda-out.json | jq . ``` ## Invoke async ```bash aws lambda invoke --function-name my-function \ --invocation-type Event \ --payload '{"key":"value"}' \ --cli-binary-format raw-in-base64-out \ /tmp/lambda-out.json echo "Invoked async" ``` ## View recent logs ```bash aws logs tail /aws/lambda/my-function --since 30m --format short ``` ## Update function code (zip) ```bash cd /tmp/lambda-code && zip -r /tmp/function.zip . && \ aws lambda update-function-code --function-name my-function \ --zip-file fileb:///tmp/function.zip | jq '{FunctionName, LastModified, CodeSha256}' ``` ## Update environment variables ```bash aws lambda update-function-configuration --function-name my-function \ --environment 'Variables={KEY1=value1,KEY2=value2}' | jq '{FunctionName, Environment}' ``` ## Update memory / timeout ```bash aws lambda update-function-configuration --function-name my-function \ --memory-size 512 --timeout 30 | jq '{FunctionName, MemorySize, Timeout}' ``` ## List versions / aliases ```bash aws lambda list-versions-by-function --function-name my-function --query 'Versions[].{Version,Description,LastModified}' --output table ``` ```bash aws lambda list-aliases --function-name my-function --output table ``` ## Get concurrency ```bash aws lambda get-function-concurrency --function-name my-function ``` ## Notes - Use `--cli-binary-format raw-in-base64-out` for JSON payloads. - Confirm before updating function code or configuration. - For large deployments, use S3 bucket upload instead of zip.