/// <summary>
/// 设置新数据并返回旧数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="newValue"></param>
/// <returns></returns>
public T GetSet <T>(string key, T newValue)
{
if (ContainsKey(key))
{
var value = _client.GetSet(key, JsonConvert.SerializeObject(newValue));
if (!string.IsNullOrEmpty(value))
{
return(JsonConvert.DeserializeObject <T>(value));
}
}
return(default(T));
}