cdk-aws-lambda-dynamic-provisioned-concurrency

CDK app that deploys a Lambda function with dynamic provisioned concurrency and scales it based on the provisioned concurrency utilization.

Prerequisites

• AWS:
  • Must have authenticated with Default Credentials in your local environment.
  • Must have completed the CDK bootstrapping for the target AWS environment.
• Node.js + npm:
  • Must be installed in your system.

Installation

npx projen install

Deployment

npx projen deploy

Usage

1. Grab the <LAMBDA_FUNCTION_URL> from the deployment outputs:

   Outputs:
   cdk-aws-lambda-dpc-basic-dev.ScalableFunctionAliasUrl = <LAMBDA_FUNCTION_URL>

2. Install oha, a HTTP load testing tool, and put your Lambda function under stress:

   oha -q 10 -z 1m <LAMBDA_FUNCTION_URL>

3. In AWS Console, Lambda ➜ scalable-function ➜ Aliases ➜ live:

   

4. Keep monitoring the Provisioned concurrency tab of the Lambda function alias. After around three minutes, you should see it scaling up from 1 to 2 or more as a result of the load increase.

Cleanup

npx projen destroy

Architecture Diagram