1. Predictive Autoscaling for AI Workloads on AWS Lambda


    Predictive autoscaling in AWS Lambda involves preparing your Lambda functions to handle workload changes efficiently and proactively. This can be accomplished by utilizing Provisioned Concurrency, which keeps a specified number of Lambda function instances warm and ready to respond immediately to traffic spikes.

    In order to apply predictive autoscaling to your AI workloads with AWS Lambda, you can combine multiple AWS services. Let's walk through how you set this up with Pulumi.

    We will use several AWS resources for this purpose:

    1. aws.lambda.Function: This resource is used to create your lambda function. Your AI workload logic will reside here as the function's code.

    2. aws.lambda.ProvisionedConcurrencyConfig: This resource is specifically used to set up Provisioned Concurrency for your Lambda function. It ensures that a defined number of function instances are always initialized and ready to serve requests.

    3. aws.autoscalingplans.ScalingPlan: Although AWS Lambda does not directly integrate a predictive scaling feature, you can set up an AWS Auto Scaling Plan to manage scaling for other related AWS resources, which support your Lambda function's operation. This could be used to scale related databases, or even handle indirect scaling of Lambda by affecting triggers/systems that invoke your Lambda function.

    4. aws.lambda.Alias: This resource creates an alias for your Lambda function. It is used in conjunction with versioning to shift traffic between different versions of your Lambda function.

    5. aws.cloudwatch.MetricAlarm: While not directly returned in the Pulumi Registry Results, AWS CloudWatch Alarms can be employed to trigger scaling actions based on the real-time metrics of your function.

    Now, let's put this into a Pulumi program:

    import pulumi import pulumi_aws as aws # Define your AI workload as an AWS Lambda function ai_lambda_function = aws.lambda_.Function("aiLambdaFunction", role=iam_role.arn, runtime="python3.8", handler="index.handler", code=pulumi.AssetArchive({"index.py": pulumi.FileAsset("path/to/your/lambda/handler.py")}), ) # Setup Provisioned Concurrency for your Lambda function to handle predicted waves of traffic provisioned_concurrency_config = aws.lambda_.ProvisionedConcurrencyConfig("aiProvisionedConcurrency", function_name=ai_lambda_function.name, qualifier=ai_lambda_function.version, # You would reference the version of the function you want to target provisioned_concurrent_executions=10, # The amount of capacity to set aside for scaling ) # Optional: Define an AWS Lambda Alias if there's a need to shift between different versions lambda_alias = aws.lambda_.Alias("aiLambdaAlias", function_name=ai_lambda_function.name, function_version=ai_lambda_function.version, # Associate with the specific version description="Alias to manage traffic shifting between versions for predictive scaling", ) # ... # Here you would configure your AWS Auto Scaling Plan, note that AWS Lambda directly # doesn't support this, but you can manage other resources related to your Lambda function. # Export the ARN of the Lambda Function and the alias, so these can be used or referenced elsewhere pulumi.export("lambda_function_arn", ai_lambda_function.arn) pulumi.export("lambda_alias_arn", lambda_alias.arn)

    In the above program, we are doing the following:

    • We create a Lambda function with the AI workload code. You would replace "path/to/your/lambda/handler.py" with the actual path to your Python handler file.

    • We then set up Provisioned Concurrency for the Lambda function, specifying a concurrency of 10 instances. You may adjust this number based on your predictive analysis of the traffic.

    • We also create an alias for traffic shifting. This allows us to switch traffic to different versions of our Lambda function without downtime.


    • To deploy the above Pulumi program, you need to have Pulumi installed and configured on your machine.

    • Your AWS account should be configured for your Pulumi stack, typically through the AWS CLI or environment variables that Pulumi can interpret.

    • Replace iam_role with an actual IAM role that grants your Lambda function necessary permissions.

    • In your actual implementation for predictive autoscaling, you would set up Auto Scaling Plans for associated resources like databases, and possibly include custom metrics or third-party solutions for more predictive scaling strategies directly affecting Lambda.

    This program sets you up to handle AI workloads on AWS Lambda with predictive scaling considerations in place. Remember to dive deeper into AWS documentation for advanced predictive scaling strategies and how to measure traffic to fine-tune your concurrency levels.