基于Redission实现
Redisson 是一个基于 Redis 的 Java 客户端，它提供了许多高级功能，其中之一就是分布式锁
1 使用Lua脚本执行加锁操作：
Redisson通过Lua脚本执行加锁操作。Lua脚本会判断锁是否存在，如果不存在，使用hset命令设置锁的值，使用
pexpire命令设置锁的过期时间。如果锁存在而且当前线程持有，则将锁的值加1，并设置锁的过期时间为指定的时间（这是为了实现可重入锁）。
2 续约锁的过期时间：
获取锁成功后，Redisson会启动一个定时任务，也就是所谓的Watck Dog, 定期延长锁的过期时间（续约）（默认是 30 / 3 = 10s）。这个定时任务也是通过Lua脚本来实现的，它会检查锁的标识是否匹配，并使用EXPIRE命令来更新锁的过期时间。确保锁不会因为超时而被释放
3 锁释放：
当锁的持有者完成任务时，Redisson会调用Redisl的DEL命令来删除锁，
Redisson 会在释放锁时验证键的值是否与线程 ID 匹配
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