Deploying to AWS Lambda

npm install -g serverless

service: my-yama-app
 
provider:
  name: aws
  runtime: nodejs20.x
  region: us-east-1
  environment:
    DATABASE_URL: ${env:DATABASE_URL}
    JWT_SECRET: ${env:JWT_SECRET}
 
functions:
  api:
    handler: dist/server.handler
    events:
      - http:
          path: /{proxy+}
          method: ANY
    timeout: 30
    memorySize: 512

serverless deploy

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
 
Resources:
  YamaApi:
    Type: AWS::Serverless::Function
    Properties:
      Handler: dist/server.handler
      Runtime: nodejs20.x
      CodeUri: .
      Events:
        ApiEvent:
          Type: Api
          Properties:
            Path: /{proxy+}
            Method: ANY
      Environment:
        Variables:
          DATABASE_URL: !Ref DatabaseUrl
          JWT_SECRET: !Ref JwtSecret

sam build
sam deploy --guided

layers:
  nodeModules:
    path: layer
    compatibleRuntimes:
      - nodejs20.x

aws lambda update-function-configuration \
  --function-name my-yama-app \
  --environment Variables="{DATABASE_URL=...,JWT_SECRET=...}"

// Use RDS Proxy or connection pooling
const pool = new Pool({
  connectionString: process.env.DATABASE_URL,
  max: 1, // Lambda-specific: reuse connections
});