Asp.net mvc 4 如何使用Redis缓存自定义列表？

每个实体我有两个类；一个表示单个项目，另一个表示这些实体的集合

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对于单个实体

（BaseItem），错误消息会将其显示出来

GetValue（键）返回一个值，但cachedObject需要分配给实际的对象实例

using (var client = _manager.GetClient()) {
     IRedisTypedClient<T> typeObject = client.As<T>();
     typeObject.SetEntry(key, value);
}

using (var client = _manager.GetClient()) {
   if (client.ContainsKey(key)) {
      IRedisTypedClient<T> typeObject = client.As<T>();
      cachedObject = typeObject.GetValue(key);
   }
}

   at System.Collections.Generic.List`1.Add(T item)
   at ServiceStack.Text.Common.DeserializeListWithElements`2.ParseGenericList(String value, Type createListType, ParseStringDelegate parseFn)
   at ServiceStack.Text.Common.DeserializeList`2.<>c__DisplayClass3.<GetParseFn>b__0(String value)
   at ServiceStack.Text.Json.JsonReader`1.Parse(String value)
   at ServiceStack.Text.JsonSerializer`1.DeserializeFromString(String value)
   at ServiceStack.Redis.Generic.RedisTypedClient`1.DeserializeValue(Byte[] value)
   at ServiceStack.Redis.Generic.RedisTypedClient`1.GetValue(String key)
   at TryoutStuff.Program.Main(String[] args) in c:\Users\Orson\Documents\Visual Studio 2012\Projects\ICS\TryoutStuff\Program.cs:line 75