{
  "context": "This criteria evaluates how well the engineer uses Modal's auto-scaling configuration parameters to implement two serverless functions with distinct scaling behaviors. The evaluation focuses on proper usage of min_containers, max_containers, buffer_containers, scaledown_window, max_concurrent_inputs, and target_concurrent_inputs.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Modal App initialization",
      "description": "Creates a Modal App instance using modal.App() to serve as the deployment unit for the functions",
      "max_score": 5
    },
    {
      "name": "Background function decoration",
      "description": "Decorates the background processing function with @app.function() to make it a Modal serverless function",
      "max_score": 5
    },
    {
      "name": "Background min_containers",
      "description": "Sets min_containers=2 for the background processing function to maintain 2 containers running at all times",
      "max_score": 15
    },
    {
      "name": "Background max_containers",
      "description": "Sets max_containers=10 for the background processing function to limit maximum concurrency",
      "max_score": 10
    },
    {
      "name": "Background buffer_containers",
      "description": "Sets buffer_containers=3 for the background processing function to keep 3 pre-warmed idle containers ready",
      "max_score": 15
    },
    {
      "name": "Background scaledown_window",
      "description": "Sets scaledown_window=300 for the background processing function to wait 5 minutes before scaling down",
      "max_score": 10
    },
    {
      "name": "Background max_concurrent_inputs",
      "description": "Sets max_concurrent_inputs=1 for the background processing function to process one image at a time per container",
      "max_score": 10
    },
    {
      "name": "Realtime function decoration",
      "description": "Decorates the real-time thumbnail function with @app.function() to make it a Modal serverless function",
      "max_score": 5
    },
    {
      "name": "Realtime max_concurrent_inputs",
      "description": "Sets max_concurrent_inputs=5 for the real-time function to allow up to 5 concurrent requests per container",
      "max_score": 10
    },
    {
      "name": "Realtime target_concurrent_inputs",
      "description": "Sets target_concurrent_inputs=3 for the real-time function to optimize autoscaling around 3 concurrent requests per container",
      "max_score": 10
    },
    {
      "name": "Realtime max_containers",
      "description": "Sets max_containers=50 for the real-time function to handle peak traffic up to 50 containers",
      "max_score": 5
    }
  ]
}