/// <summary>
/// 获取汇率信息，缓存一天时间
/// </summary>
/// <param name="pattern"></param>
/// <returns></returns>
public static decimal GetExchangeRates(int pattern)
{
return(RedisCacheHelper.AutoCache(ConstClass.RedisKey4MPrefix, ConstClass.RedisKey4ExchangeRates, () => DAL.GetExchangeRateByPattern(pattern), ConstClass.RedisCacheMinutesOneDay));
}