/// <summary>
/// 添加统计
/// </summary>
/// <param name="sql">dbBuilder.ToString()：唯一标识</param>
/// <param name="dataType">数据类型</param>
private static string CreateKey(string sql, enumDataType dataType)
{
#region 移除失效时间
// 移除失效的时间
DataStatisticsList.ForEach(o => o.LstActiveAt.RemoveAll(t => DateTime.Now > t.AddMinutes(CacheConfigs.ConfigInfo.VisitTime)));
// 移除无时间统计的项
DataStatisticsList.RemoveAll(o => o.Value == null && o.LstActiveAt.Count() == 0);
// 重置加入缓存时间
var lst = DataStatisticsList.Where(o => o.Value == null).ToList();
for (var i = 0; i < lst.Count; i++)
{
lst[i].JoinCacheAt = DateTime.MinValue;
}
#endregion
var key = Encrypt.MD5(dataType.GetName() + sql).Substring(8, 16);
// 加入统计
var cache = DataStatisticsList.FirstOrDefault(o => o.Key == key);
if (cache == null)
{
cache = new DataCache {
Key = key, DataType = dataType, LstActiveAt = new List <DateTime>()
};
DataStatisticsList.Add(cache);
}
cache.LstActiveAt.Add(DateTime.Now);
return(key);
}
/// <summary>
/// 添加缓存值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="t">dbBuilder.ToString()：唯一标识</param>
/// <param name="isIgnoreStatistics">是否忽略统计，直接加入缓存</param>
private static void Set <T>(string key, T t, bool isIgnoreStatistics = false)
{
var cache = DataStatisticsList.FirstOrDefault(o => o.Key == key);
if (!isIgnoreStatistics && cache.LstActiveAt.Count < CacheConfigs.ConfigInfo.VisitCount)
{
return;
}
// 加入缓存
WebCache.Add(key, t, CacheConfigs.ConfigInfo.CacheTimeOut);
cache.JoinCacheAt = DateTime.Now;
}
/// <summary>
/// 获取缓存值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key">dbBuilder.ToString()：唯一标识</param>
public static T Get <T>(string sql, enumDataType dataType, Func <T> func = null, bool isIgnoreStatistics = false)
{
var key = CreateKey(sql, dataType);
var value = DataStatisticsList.FirstOrDefault(o => o.Key == key).Value;
if (value == null)
{
if (func == null)
{
return(default(T));
}
value = func();
Set(key, value, isIgnoreStatistics);
}
return((T)value);
}