{
  "context": "The agent writes a database connection module for a production Mongoose application. Criteria check whether the connection is configured with pool size and timeouts, error/disconnect events are handled, environment variables are used for the URI, and graceful shutdown is implemented for SIGTERM and SIGINT signals.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "maxPoolSize configured",
      "description": "The `mongoose.connect` call includes a `maxPoolSize` option with a numeric value",
      "max_score": 12
    },
    {
      "name": "serverSelectionTimeoutMS set",
      "description": "The `mongoose.connect` call includes `serverSelectionTimeoutMS` option",
      "max_score": 8
    },
    {
      "name": "socketTimeoutMS set",
      "description": "The `mongoose.connect` call includes `socketTimeoutMS` option",
      "max_score": 8
    },
    {
      "name": "URI from environment variable",
      "description": "The MongoDB URI is read from `process.env` (e.g., `process.env.MONGODB_URI`) rather than hardcoded as a string literal",
      "max_score": 12
    },
    {
      "name": "error event handler",
      "description": "A listener is registered on `mongoose.connection` for the `'error'` event",
      "max_score": 10
    },
    {
      "name": "disconnected event handler",
      "description": "A listener is registered on `mongoose.connection` for the `'disconnected'` event",
      "max_score": 10
    },
    {
      "name": "SIGTERM handler",
      "description": "A `process.on('SIGTERM', ...)` handler is registered that closes the Mongoose connection before exiting",
      "max_score": 12
    },
    {
      "name": "SIGINT handler",
      "description": "A `process.on('SIGINT', ...)` handler is registered that closes the Mongoose connection before exiting",
      "max_score": 12
    },
    {
      "name": "connection.close on shutdown",
      "description": "The signal handlers call `mongoose.connection.close()` (not just `process.exit()`) to properly release connections before exiting",
      "max_score": 10
    },
    {
      "name": "await on connect",
      "description": "The `mongoose.connect(...)` call is awaited (not fire-and-forget)",
      "max_score": 6
    }
  ]
}