使用AWS CDK配置Lambda加温器

Question

可以使用AWS SAM配置Lambda加热器功能。

Resources:
  # ...
  Web:
    Type: AWS::Serverless::Function # https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
    Properties:
      CodeUri: web/
      Handler: lambda.handler
      Runtime: nodejs10.x
      FunctionName: !Sub myproject-${Stage}-web
      Events:
        Root:
          Type: Api # https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#api
          Properties:
            Path: /
            Method: ANY
            RestApiId: !Ref WebRestApi
        RootProxy:
          Type: Api # https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#api
          Properties:
            Path: /{proxy+}
            Method: ANY
            RestApiId: !Ref WebRestApi
        WarmingSchedule:
          Type: Schedule
          Properties:
            Schedule: rate(5 minutes)
            Input: '{ "warmer":true,"concurrency":3 }'
      MemorySize: 512
      Policies:
        - AWSLambdaRole

如何使用AWS CDK创建取暖器？有没有“开箱即用”的解决方案，或者使用Schedule.cron的自定义lambda函数是必要的？

Answer 1

在Cloudwatch中，你需要一个cron任务来触发lambda让它保持温暖，或者你可以使用无服务器插件：

https://serverless.com/blog/keep-your-lambdas-warm/