/// <summary>
/// 缓存Helper，定时刷新hash
/// </summary>
/// <param name="key">缓存Key</param>
/// <param name="method">获取数据的委托</param>
/// <param name="cachePrefix">缓存项前缀</param>
/// <param name="cacheMinutes">缓存时间，默认为配置文件的值</param>
/// <returns>从缓存或方法委托中获取的对象</returns>
internal static void AutoHashtable(string cachePrefix, string key, Func <DataTable> method, int hashIndex, string primaryKey, int cacheMinutes = 0)
{
if (cacheMinutes == 0)
{
cacheMinutes = ConfigHelper.SessionExpireMinutes;
}
string tempkey = cachePrefix + key + "Index_" + hashIndex.ToString();
var temp = RedisCacheHelper.Get <string>(tempkey);
if (string.IsNullOrEmpty(temp) || hash[hashIndex].Count == 0)
{
RedisCacheHelper.Add(tempkey, "1");
DataTable temp1 = method.Invoke();
hash[hashIndex].Clear();
if (temp1 != null)
{
foreach (DataRow item in temp1.Rows)
{
hash[hashIndex].Add(item[primaryKey].ToString(), item);
}
}
}
}
/// <summary>
/// 缓存Helper
/// </summary>
/// <typeparam name="T">缓存项类型</typeparam>
/// <param name="key">缓存Key</param>
/// <param name="method">获取数据的委托</param>
/// <param name="cachePrefix">缓存项前缀</param>
/// <param name="cacheMinutes">缓存时间，默认为配置文件的值</param>
/// <returns>从缓存或方法委托中获取的对象</returns>
public static T AutoCache <T>(string cachePrefix, string key, Func <T> method, int cacheMinutes = 0)
{
if (cacheMinutes == 0)
{
cacheMinutes = ConfigHelper.SessionExpireMinutes;
}
var temp = RedisCacheHelper.Get <T>(cachePrefix + key);
if (temp == null || EqualityComparer <T> .Default.Equals(temp, default(T)))
{
T temp1 = method.Invoke();
if (temp1 != null)
{
RedisCacheHelper.Add(cachePrefix + key, temp1);
return((T)temp1);
}
}
else
{
return((T)temp);
}
return(default(T));
}