AWS Lambda Tiered Compilation Sample

Getting started

Download or clone the repository.

To install prerequisite software:

1. Install AWS CDK
2. Install Apache Maven (or use your preferred IDE)
3. Build and package the Java application in the software folder:

cd software/ExampleFunction/
mvn package

4. Synthesize CDK. This previews changes to your AWS account before it makes them:

cd infrastructure
cdk synth

5. Deploy the Lambda functions:

cdk deploy --outputs-file outputs.json

The API Gateway endpoint URL is displayed in the output and saved in a file named outputs.json. The contents are similar to:

{
  "ExampleTieredCompStack": {
    "apiendpoint": "https://{YOUR_UNIQUE_ID_HERE}.execute-api.eu-west-1.amazonaws.com"
  }
}

Using Artillery to load test the changes

First, install prerequisites:

1. Install jq and Artillery Core
2. Run the following two scripts from the /infrastructure directory:

artillery run -t $(cat outputs.json | jq -r '.ExampleTieredCompStack.apiendpoint') -v '{ "url": "/without" }' loadtest.yml
artillery run -t $(cat outputs.json | jq -r '.ExampleTieredCompStack.apiendpoint') -v '{ "url": "/with" }' loadtest.yml

Check results in Amazon CloudWatch Insights

1. Navigate to Amazon CloudWatch.
2. Select Logs then Logs Insights.
3. Select the following two log groups from the drop-down list:

/aws/lambda/example-with-tiered-comp
/aws/lambda/example-without-tiered-comp

4. Copy the following query and choose Run query:

filter @type = "REPORT"
| parse @log /\d+:\/aws\/lambda\/example-(?<function>\w+)-\w+/
| stats
count(*) as invocations,
pct(@duration, 0) as p0,
pct(@duration, 25) as p25,
pct(@duration, 50) as p50,
pct(@duration, 75) as p75,
pct(@duration, 90) as p90,
pct(@duration, 95) as p95,
pct(@duration, 99) as p99,
pct(@duration, 100) as p100
group by function, ispresent(@initDuration) as coldstart
| sort by function, coldstart

You see results similar to:

Security

See CONTRIBUTING for more information.

License

This library is licensed under the MIT-0 License. See the LICENSE file.