.net - Hash.Remove 上的 string[] 异常

Question

当尝试通过调用 RedisConnection.Hashes.Remove(int db, string key, string[] fields, bool queueJump = false) 删除散列的字段时，我得到一个异常提示:“ERR wrong number of arguments for 'hdel' command ".

这是生成它的代码:

    static void Main(string[] args)
    {
        var connection = new RedisConnection("localhost");
        connection.Open();

        var transaction = connection.CreateTransaction();

        // setting values to fields - works fine!
        for (int index = 0; index < 2; index++)
        {
            transaction.Hashes.Set(0, "s1", String.Format("f{0}", index.ToString()), String.Format("v{0}", index.ToString()));
        }
        transaction.Execute().Wait();

        // Here is where the exception is being thrown
        connection.Hashes.Remove(0, "s1", new string[] { "f1", "f2" }).Wait();

        Console.ReadLine();
    }

我正在使用取自 nuget 的 Booksleeve 1.3.37.0。谢谢，

Answer 1

来自HDEL manual ;

History

= 2.4: Accepts multiple field arguments. Redis versions older than 2.4 can only remove a field per call.

换句话说，您运行的 Redis 版本早于 2.4，因此每次调用只能删除一个字段。这很可能会奏效；

connection.Hashes.Remove(0, "s1", new string[] { "f1" }).Wait();
connection.Hashes.Remove(0, "s1", new string[] { "f2" }).Wait();

(或者当然可能有一个不采用数组的调用版本)