AWS Lambdas in various ways

Each one implements a really pointless fizzbuzz service in more or less the same way to allow comparison of the frameworks.

Testing

Tested using an API Gateway event with:

  "queryStringParameters": {
    "end": "25"
  },

e.g.

aws lambda invoke --function-name <function> \
        --cli-binary-format raw-in-base64-out \
        --payload '{ "queryStringParameters": { "end": 10 } }' /dev/stdout

Deploying

Deploy via CDK:

mvn clean package
cd cdk
npx cdk deploy

Stats

Manual Dependency Injection

• Shaded jar size: 1.3M

• Cold start:

  Duration: 46.64 ms	Billed Duration: 47 ms	Memory Size: 1024 MB	Max Memory Used: 109 MB	Init Duration: 603.71 ms
  

• Warm start:

  Duration: 1.90 ms	Billed Duration: 2 ms	Memory Size: 1024 MB	Max Memory Used: 109 MB
  

Dagger2

• Shaded jar size: 1.3M

• Cold start:

  Duration: 137.84 ms	Billed Duration: 138 ms	Memory Size: 1024 MB	Max Memory Used: 109 MB	Init Duration: 534.27 ms
  

• Warm start:

  Duration: 2.46 ms	Billed Duration: 3 ms	Memory Size: 1024 MB	Max Memory Used: 109 MB
  

Micronaut

• Shaded jar size: 16M

• Cold start:

  Duration: 720.93 ms	Billed Duration: 721 ms	Memory Size: 1024 MB	Max Memory Used: 152 MB	Init Duration: 2462.59 ms
  

• Warm start:

  Duration: 3.53 ms	Billed Duration: 4 ms	Memory Size: 1024 MB	Max Memory Used: 153 MB
  

Spring Cloud Functions

• Shaded jar size: 22M

• Cold start:

  Duration: 470.33 ms	Billed Duration: 471 ms	Memory Size: 1024 MB	Max Memory Used: 174 MB	Init Duration: 3663.04 ms
  

• Warm start:

  Duration: 3.31 ms	Billed Duration: 4 ms	Memory Size: 1024 MB	Max Memory Used: 174 MB