Specify function Architecture in defineFunction

[bogris]

Environment information

System:
  OS: macOS 14.6.1
  CPU: (8) arm64 Apple M1 Pro
  Memory: 136.77 MB / 16.00 GB
  Shell: /bin/zsh
Binaries:
  Node: 20.10.0 - ~/.nvm/versions/node/v20.10.0/bin/node
  Yarn: undefined - undefined
  npm: 10.2.3 - ~/.nvm/versions/node/v20.10.0/bin/npm
  pnpm: 8.9.0 - ~/.npm-packages/bin/pnpm
NPM Packages:
  @aws-amplify/auth-construct: Not Found
  @aws-amplify/backend: 1.0.4
  @aws-amplify/backend-auth: Not Found
  @aws-amplify/backend-cli: 1.2.2
  @aws-amplify/backend-data: Not Found
  @aws-amplify/backend-deployer: Not Found
  @aws-amplify/backend-function: Not Found
  @aws-amplify/backend-output-schemas: Not Found
  @aws-amplify/backend-output-storage: Not Found
  @aws-amplify/backend-secret: Not Found
  @aws-amplify/backend-storage: Not Found
  @aws-amplify/cli-core: Not Found
  @aws-amplify/client-config: Not Found
  @aws-amplify/deployed-backend-client: Not Found
  @aws-amplify/form-generator: Not Found
  @aws-amplify/model-generator: Not Found
  @aws-amplify/platform-core: Not Found
  @aws-amplify/plugin-types: Not Found
  @aws-amplify/sandbox: Not Found
  @aws-amplify/schema-generator: Not Found
  aws-amplify: 6.4.4
  aws-cdk: 2.151.0
  aws-cdk-lib: 2.151.0
  typescript: 5.5.3
AWS environment variables:
  AWS_STS_REGIONAL_ENDPOINTS = regional
  AWS_NODEJS_CONNECTION_REUSE_ENABLED = 1
  AWS_SDK_LOAD_CONFIG = 1
No CDK environment variables
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Describe the feature

add the option to specify arm architecture for defineFunction

Use case

we get way better cold starts for functions on arm.

Given that there is a lot of usage for smaller projects, cold starts are statistically more often in amp projects and this would improve the user exp a lot.

[ykethan]

Hey @bogris, this is currently being tracked on #1820 as a feature request.
but you should be able to override the architecture for a function as following

backend.myApiFunction.resources.cfnResources.cfnFunction.architectures = [
  "arm64",
];

Closing this as duplicate