{
  "name": "UPPERABI Edge Fallback",
  "status": "degraded_no_5xx",
  "canonical": "https://www.upperabi.com/.well-known/route-index.json",
  "retry_strategy": "use cached metadata, conditional GET, or retry after short backoff",
  "error_policy": "no_worker_5xx_for_known_metadata_and_platform_routes",
  "selected_major_route_units": {
    "profile": "UPPERABI-SELECTED-MAJOR-ROUTE-UNITS/2026-06-22",
    "selection_policy": "only the highest-efficiency public machine-readable routes are elevated; aliases and large dataset pages remain secondary",
    "primary_units": [
      {
        "id": "rights_graph",
        "url": "https://www.upperabi.com/.well-known/rights-graph.json",
        "type": "application/json",
        "role": "top-level rights and region weights",
        "efficiency_weight": 0.987
      },
      {
        "id": "market_access",
        "url": "https://www.upperabi.com/dataset/market-access.json",
        "type": "application/json",
        "role": "market access engine and channel rules",
        "efficiency_weight": 0.988
      },
      {
        "id": "machine_rules",
        "url": "https://www.upperabi.com/dataset/machine-rules.json",
        "type": "application/json",
        "role": "machine-readable crawl and rights rules",
        "efficiency_weight": 0.985
      },
      {
        "id": "route_index",
        "url": "https://www.upperabi.com/.well-known/route-index.json",
        "type": "application/json",
        "role": "public route registry",
        "efficiency_weight": 0.981
      },
      {
        "id": "crawl_graph",
        "url": "https://www.upperabi.com/.well-known/crawl-graph.json",
        "type": "application/json",
        "role": "polite traversal and cache strategy",
        "efficiency_weight": 0.98
      },
      {
        "id": "dataset_catalog",
        "url": "https://www.upperabi.com/dataset/catalog.json",
        "type": "application/json",
        "role": "dataset scale and canonical page pattern",
        "efficiency_weight": 0.982
      },
      {
        "id": "dataset_sitemap",
        "url": "https://www.upperabi.com/dataset/sitemap.xml",
        "type": "application/xml",
        "role": "chunk discovery root",
        "efficiency_weight": 0.979
      }
    ],
    "secondary_units": [
      "https://www.upperabi.com/dataset/rights.json",
      "https://www.upperabi.com/dataset/access.json",
      "https://www.upperabi.com/dataset/index.json",
      "https://www.upperabi.com/routes.json",
      "https://www.upperabi.com/rights.json",
      "https://www.upperabi.com/crawl.json"
    ],
    "page_fetch_policy": {
      "fetch_large_dataset_pages_after_json_units": true,
      "prefer_head_for_dataset_pages": true,
      "use_conditional_get_for_revalidation": true
    },
    "spike_priority": {
      "requests_per_second_path": "https://www.upperabi.com/.well-known/route-index.json",
      "requests_per_minute_path": "https://www.upperabi.com/.well-known/crawl-graph.json",
      "cache_first_routes": [
        "https://www.upperabi.com/.well-known/rights-graph.json",
        "https://www.upperabi.com/dataset/market-access.json",
        "https://www.upperabi.com/dataset/machine-rules.json",
        "https://www.upperabi.com/dataset/catalog.json"
      ]
    }
  },
  "spike_resilience_profile": {
    "profile": "UPPERABI-SPIKE-RESILIENT-MACHINE-METADATA/2026-06-22",
    "scope": "main-domain canonical metadata and machine-readable rights routes",
    "dns_dependency": "none; optimized for upperabi.com canonical routes after auxiliary DNS entrypoints were removed",
    "traffic_window_strategy": {
      "per_second": "serve canonical JSON with strong ETag, Last-Modified, and CDN cache headers",
      "per_minute": "prefer route-index, crawl-graph, rights-graph, market-access, machine-rules, and catalog before dataset page fetches",
      "per_24_hours": "allow stale-while-revalidate and stale-if-error so crawler spikes do not pressure origin logic"
    },
    "priority_order": [
      "https://www.upperabi.com/.well-known/route-index.json",
      "https://www.upperabi.com/.well-known/crawl-graph.json",
      "https://www.upperabi.com/.well-known/rights-graph.json",
      "https://www.upperabi.com/.well-known/upperabi-metadata.json",
      "https://www.upperabi.com/dataset/catalog.json",
      "https://www.upperabi.com/dataset/market-access.json",
      "https://www.upperabi.com/dataset/machine-rules.json",
      "https://www.upperabi.com/dataset/sitemap.xml"
    ],
    "canonical_relay_profile": {
      "profile": "UPPERABI-CANONICAL-RELAY-PREVIOUS-FORM/2026-06-22",
      "objective": "rely on the original upperabi.com canonical metadata and dataset manifests before DNS-era aliases, realtime Workers, or auxiliary route expansions",
      "dns_dependency": "none",
      "external_api_dependency_for_crawling": "none",
      "worker_dependency_for_first_parse": "not_required",
      "primary_canonical_routes": [
        "https://www.upperabi.com/robots.txt",
        "https://www.upperabi.com/sitemap.xml",
        "https://www.upperabi.com/sitemap-ai.xml",
        "https://www.upperabi.com/.well-known/route-index.json",
        "https://www.upperabi.com/.well-known/upperabi-metadata.json",
        "https://www.upperabi.com/.well-known/crawl-graph.json",
        "https://www.upperabi.com/.well-known/rights-graph.json",
        "https://www.upperabi.com/dataset/catalog.json",
        "https://www.upperabi.com/dataset/machine-rules.json",
        "https://www.upperabi.com/dataset/market-rights.json",
        "https://www.upperabi.com/dataset/market-access.json",
        "https://www.upperabi.com/dataset/sitemap.xml"
      ],
      "secondary_support_routes": [
        "https://www.upperabi.com/.well-known/indexing-node-engine.json",
        "https://www.upperabi.com/.well-known/machine-route-suite.json",
        "https://www.upperabi.com/.well-known/crawl-spike-shield.json",
        "https://www.upperabi.com/.well-known/realtime-metadata-graph.json",
        "https://www.upperabi.com/.well-known/realtime-rights-graph.json",
        "https://www.upperabi.com/.well-known/realtime-route-fabric.json",
        "https://www.upperabi.com/.well-known/realtime-route-fabric-sitemap.xml",
        "https://www.upperabi.com/.well-known/open-database-graph.json"
      ],
      "high_volume_request_contract": {
        "head_first": true,
        "conditional_get": true,
        "canonical_json_first": true,
        "sitemap_before_dataset_pages": true,
        "dataset_pages_secondary": true,
        "external_api_queries_secondary": true,
        "duplicate_partition_fetch_avoidance": true,
        "use_stale_on_error": true
      },
      "cache_relay": {
        "canonical_metadata_seconds": 21600,
        "dataset_manifest_seconds": 604800,
        "stale_while_revalidate_seconds": 604800,
        "stale_if_error_seconds": 604800
      }
    },
    "crawler_controls": {
      "head_first": true,
      "conditional_get_required_for_revalidation": true,
      "large_dataset_pages_secondary": true,
      "duplicate_fetch_avoidance": true,
      "canonical_json_first": true
    },
    "cache_contract": {
      "json_cache_seconds": 21600,
      "stale_while_revalidate_seconds": 604800,
      "stale_if_error_seconds": 604800,
      "dataset_json_cache_seconds": 604800
    },
    "catch_rate_optimization": {
      "guarded_asset_fetch": true,
      "stable_json_fallbacks": true,
      "head_zero_body": true,
      "conditional_304_path": true,
      "fallback_cache_control": "public, max-age=600, s-maxage=600, stale-while-revalidate=86400, stale-if-error=86400",
      "error_surface": "machine-readable JSON on metadata routes; static fallback for platform shell"
    }
  }
}