public async Task Remove()
        {
            var set = new RedisSortedSet <string>(GlobalSettings.Default, "set");
            await set.Delete();

            await set.Add("a", 10);

            await set.Add("b", 100);

            await set.Add("c", 1000);

            await set.Add("d", 10000);

            await set.Add("e", 100000);

            await set.Add("f", 1000000);

            var c = await set.Get("c");

            c.Value.Is("c");
            c.Rank.Is(2);
            c.Score.Is(1000);
            (await set.Remove("c")).IsTrue();
            (await set.Remove("c")).IsFalse();
            (await set.Get("c")).IsNull();

            await set.Add("c", 1000);

            (await set.RemoveRangeByRank(2, 3)).Is(2);
            (await set.RangeByRank()).Is("a", "b", "e", "f");

            await set.Delete();

            await set.Add("a", 10);

            await set.Add("b", 100);

            await set.Add("c", 1000);

            await set.Add("d", 10000);

            await set.Add("e", 100000);

            await set.Add("f", 1000000);

            (await set.RemoveRangeByScore(100, 10000)).Is(3);
            (await set.RangeByRank()).Is("a", "e", "f");
        }
 /// <summary>
 /// 删除超时记录
 /// </summary>
 /// <param name="time"></param>
 /// <returns></returns>
 public long RemoveByOvertime(DateTime time)
 {
     return(SortedSet.RemoveRangeByScore(0, time.ToTimestamp()));
 }
        public async Task Remove()
        {
            var set = new RedisSortedSet<string>(GlobalSettings.Default, "set");
            await set.Delete();
            await set.Add("a", 10);
            await set.Add("b", 100);
            await set.Add("c", 1000);
            await set.Add("d", 10000);
            await set.Add("e", 100000);
            await set.Add("f", 1000000);

            var c = await set.Get("c");
            c.Value.Is("c");
            c.Rank.Is(2);
            c.Score.Is(1000);
            (await set.Remove("c")).IsTrue();
            (await set.Remove("c")).IsFalse();
            (await set.Get("c")).IsNull();

            await set.Add("c", 1000);
            (await set.RemoveRangeByRank(2, 3)).Is(2);
            (await set.RangeByRank()).Is("a", "b", "e", "f");

            await set.Delete();
            await set.Add("a", 10);
            await set.Add("b", 100);
            await set.Add("c", 1000);
            await set.Add("d", 10000);
            await set.Add("e", 100000);
            await set.Add("f", 1000000);
            (await set.RemoveRangeByScore(100, 10000)).Is(3);
            (await set.RangeByRank()).Is("a", "e", "f");
        }