/// <summary>
/// set : key存在则失败,不存在才会成功,并且过期时间5秒
/// </summary>
/// <param name="lockVal"></param>
/// <returns></returns>
public static bool SetLock(string lockId)
{
var redisClient = RedisFactory.GetRedisClient();
//var success = redisClient.Set(_lockKey, lockId, expireSeconds: 5, exists: RedisExistence.Nx);
// var success = redisClient.Set(_lockKey, lockId, expireSeconds: 5, exists: false);
//return success;
return(false);
}
/// <summary>
/// 业务处理完后,释放锁.
/// </summary>
/// <param name="lockId"></param>
public static void ReleaseLock(string lockId)
{
var redisClient = RedisFactory.GetRedisClient();
redisClient.Eval(_luaScript, new string[] { _lockKey }, lockId);
}
private readonly static string _luaScript = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";//释放锁的redis脚本
/// <summary>
/// //测试前,先把锁删了.
/// </summary>
public static void DeleteLock()
{
var redisClient = RedisFactory.GetRedisClient();
redisClient.Del(_lockKey);
}