/// <summary>
/// 取得缓存的对象,按配置中的Cache_TimeoutMinutes缓存
/// </summary>
/// <typeparam name="TT"></typeparam>
/// <param name="cacheKey"></param>
/// <param name="syncLock"></param>
/// <param name="getCacheItem"></param>
/// <returns></returns>
public static TT GetCacheItem <TT>(string cacheKey, object syncLock, GetCacheItemDelegate <TT> getCacheItem)
{
return(GetCacheItem <TT>(cacheKey,
syncLock,
CacheItemPriority.Normal,
null,
null,
TimeSpan.FromMinutes(m_CacheTimeoutMinutes),
getCacheItem));
}
/// <summary>
/// 缓存对象
/// </summary>
/// <typeparam name="TT"></typeparam>
/// <param name="cacheKey"></param>
/// <param name="syncLock"></param>
/// <param name="cacheDependencyFileName">缓存依赖的文件</param>
/// <param name="getCacheItem"></param>
/// <returns></returns>
public static TT GetCacheItem <TT>(string cacheKey, object syncLock, string cacheDependencyFileName,
GetCacheItemDelegate <TT> getCacheItem)
{
return(GetCacheItem <TT>(cacheKey,
syncLock,
CacheItemPriority.Normal,
null,
new CacheDependency(cacheDependencyFileName),
TimeSpan.FromHours(1),
getCacheItem));
}
/// <summary>
/// Gets the cache item.
/// </summary>
/// <typeparam name="TCacheItem">The type of the T.</typeparam>
/// <param name="cacheKey">The cache key.</param>
/// <param name="syncLock">The sync lock.</param>
/// <param name="priority">The priority.</param>
/// <param name="refreshAction">The refresh action.</param>
/// <param name="cacheDependency">The cache dependency.</param>
/// <param name="timeout">The timeout.</param>
/// <param name="getCacheItem">The get cache item.</param>
/// <returns></returns>
public static TCacheItem GetCacheItem <TCacheItem>(string cacheKey, object syncLock,
CacheItemPriority priority, CacheItemRemovedCallback refreshAction,
CacheDependency cacheDependency, TimeSpan timeout,
GetCacheItemDelegate <TCacheItem> getCacheItem)
{
object result = HttpRuntime.Cache.Get(cacheKey);
if (result == null)
{
lock (syncLock)
{
result = HttpRuntime.Cache.Get(cacheKey);
if (result == null)
{
result = getCacheItem();
HttpRuntime.Cache.Add(cacheKey, result, cacheDependency,
DateTime.Now.Add(timeout), TimeSpan.Zero, priority, refreshAction);
}
}
}
return((TCacheItem)result);
}
public static TT GetCacheItem <TT>(string cacheKey, object syncLock,
TimeSpan timeout, GetCacheItemDelegate <TT> getCacheItem)
{
return(GetCacheItem(cacheKey, syncLock, null, timeout, getCacheItem));
}
public static TT GetCacheItem <TT>(string cacheKey, object syncLock,
CacheItemPriority priority, CacheItemRemovedCallback refreshAction,
CacheDependency cacheDependency, TimeSpan timeout, GetCacheItemDelegate <TT> getCacheItem)
{
var helper = new CacheHelper(System.Web.HttpRuntime.Cache);
Func <TT> f = () => getCacheItem();
return(helper.GetCacheItem(cacheKey, priority, refreshAction, cacheDependency, timeout, f, syncLock));
}
public static TT GetCacheItem <TT>(string cacheKey, object syncLock,
CacheItemPriority priority, CacheItemRemovedCallback refreshAction, TimeSpan timeout,
GetCacheItemDelegate <TT> getCacheItem)
{
return(GetCacheItem(cacheKey, syncLock, priority, refreshAction, null, timeout, getCacheItem));
}
