{
  "schema_version": "1.0",
  "description": "Daily News Report 缓存文件，用于避免重复抓取和跟踪历史表现",

  "last_run": {
    "date": "2026-01-21",
    "duration_seconds": 180,
    "items_collected": 20,
    "items_published": 20,
    "sources_used": ["hn", "hf_papers", "james_clear", "fs_blog", "scotthyoung"]
  },

  "source_stats": {
    "_comment": "记录每个源的历史表现，用于动态调整优先级",
    "hn": {
      "total_fetches": 0,
      "success_count": 0,
      "avg_items_per_fetch": 0,
      "avg_quality_score": 0,
      "last_fetch": null,
      "last_success": null
    }
  },

  "url_cache": {
    "_comment": "已处理的 URL 缓存，避免重复收录",
    "_ttl_hours": 168,
    "entries": {}
  },

  "content_hashes": {
    "_comment": "内容指纹，用于去重",
    "_ttl_hours": 168,
    "entries": {}
  },

  "article_history": {
    "_comment": "已收录文章的简要记录",
    "2026-01-21": []
  }
}