{
  "slug": "distributed-lock",
  "name": "单机锁与分布式锁",
  "description": "synchronized到Redis SETNX演进、Lua脚本释放锁、锁续期问题",
  "tags": [
    "distributed-lock",
    "lock-design",
    "redis-lock"
  ],
  "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
    }
  }
}