/// <summary>
/// 从缓存获取获取实体
/// </summary>
/// <param name="id">主键</param>
public static BaseUserEntity GetObjectByCache(string id)
{
BaseUserEntity result = null;
System.Web.Caching.Cache cache = HttpRuntime.Cache;
string cacheObject = "User";
if (!string.IsNullOrEmpty(id))
{
cacheObject = "User" + id;
}
if (cache == null || cache[cacheObject] == null)
{
BaseUserManager manager = new DotNet.Business.BaseUserManager(BaseUserEntity.TableName);
result = manager.GetObject(id);
// 若是空的不用缓存，继续读取实体
if (result != null)
{
cache.Add(cacheObject, result, null, DateTime.Now.AddMinutes(30), TimeSpan.Zero, CacheItemPriority.Normal, null);
// System.Console.WriteLine(System.DateTime.Now.ToString(BaseSystemInfo.DateTimeFormat) + " cache User " + id);
}
}
result = cache[cacheObject] as BaseUserEntity;
return(result);
}
/// <summary>
/// 获取用户表，从缓存读取
/// </summary>
public static List <BaseUserEntity> GetEntities()
{
if (HttpContext.Current.Session == null || HttpContext.Current.Cache[BaseUserEntity.TableName] == null)
{
lock (BaseSystemInfo.UserLock)
{
if (HttpContext.Current.Session == null || HttpContext.Current.Cache[BaseUserEntity.TableName] == null)
{
// 读取目标表中的数据
List <BaseUserEntity> entityList = null;
BaseUserManager manager = new DotNet.Business.BaseUserManager(BaseUserEntity.TableName);
entityList = manager.GetList <BaseUserEntity>();
// 这个是没写过期时间的方法
// HttpContext.Current.Cache[tableName] = entityList;
// 设置过期时间为8个小时，第2天若有不正常的自动就可以正常了
HttpContext.Current.Cache.Add(BaseUserEntity.TableName, entityList, null, DateTime.Now.AddHours(8), TimeSpan.Zero, CacheItemPriority.Normal, null);
}
}
}
return(HttpContext.Current.Cache[BaseUserEntity.TableName] as List <BaseUserEntity>);
}
