{
  "slug": "two-level-cache",
  "name": "Caffeine + Redis 二级缓存",
  "description": "CacheManager 二级缓存架构、HeavyKeeper 热Key探测、putIfPresent 写一致性",
  "tags": [
    "CacheManager",
    "HeavyKeeper",
    "L1-L2",
    "decay",
    "fading",
    "get-flow",
    "inconsistency",
    "parameters",
    "two-level-cache",
    "write-consistency"
  ],
  "difficulty_range": [
    3,
    5
  ],
  "schema_version": "1.0.0",
  "updated": "2026-09-09",
  "question_files": [
    "single_choice",
    "code_reading",
    "short_answer"
  ],
  "stats": {
    "total": 14,
    "by_type": {
      "single_choice": 8,
      "code_reading": 3,
      "short_answer": 3
    }
  }
}