{
  "slug": "mysql-acid",
  "name": "MySQL ACID 实现机制",
  "description": "InnoDB 如何用日志与锁实现事务的原子性/一致性/隔离性/持久性：undo log、redo log、WAL、MVCC、锁",
  "tags": [
    "ACID",
    "InnoDB",
    "MVCC",
    "WAL",
    "binlog",
    "innodb_flush_log_at_trx_commit",
    "next-key lock",
    "redo log",
    "undo log",
    "一致性",
    "两阶段提交",
    "原子性",
    "崩溃恢复",
    "快照读",
    "性能",
    "持久性",
    "物理日志",
    "约束",
    "行锁",
    "逻辑日志",
    "间隙锁",
    "隔离性"
  ],
  "difficulty_range": [
    2,
    4
  ],
  "schema_version": "1.0.0",
  "updated": "2026-09-07",
  "question_files": [
    "single_choice",
    "fill_blank",
    "code_reading",
    "short_answer"
  ],
  "stats": {
    "total": 35,
    "by_type": {
      "single_choice": 10,
      "fill_blank": 10,
      "code_reading": 5,
      "short_answer": 10
    }
  }
}