{
  "journey": "authenticated shipment status",
  "known_user": "user-100",
  "known_shipment": "shipment-100",
  "components": {
    "identity": {"duration": 80, "role": "hard", "provides": "authentication and ownership"},
    "database": {"duration": 120, "role": "hard", "provides": "last-known shipment and ordered events"},
    "api": {"duration": 40, "role": "hard", "provides": "customer behavior boundary"},
    "queue": {"duration": 100, "role": "freshness", "provides": "durable update ingestion"},
    "carrier": {"duration": 140, "role": "freshness", "provides": "new external status"},
    "cache": {"duration": 60, "role": "optional", "provides": "read acceleration"}
  },
  "degraded_requires": ["identity", "database", "api"],
  "full_requires": ["identity", "database", "api", "queue", "carrier"],
  "schedules": {
    "inventory": ["database", "queue", "cache", "carrier", "identity", "api"],
    "journey_first": ["identity", "database", "api", "queue", "carrier", "cache"],
    "readiness_first": ["api", "cache", "identity", "queue", "database", "carrier"],
    "invalid_narrow": ["api", "database", "cache"]
  }
}