using System;
using System.Web;
using System.Web.Caching;

namespace NGuestBook.Utility
{
/**//// <summary>
/// 輔助類，用于緩存操作
/// </summary>
public sealed class CacheAccess
{
/**//// <summary>
/// 將對象加入到緩存中
/// </summary>
/// <param name="cacheKey">緩存鍵</param>
/// <param name="cacheObject">緩存對象</param>
/// <param name="dependency">緩存依賴項</param>
public static void SaveToCache(string cacheKey, object cacheObject, CacheDependency dependency)
{
Cache cache = HttpRuntime.Cache;
cache.Insert(cacheKey, cacheObject, dependency);
}

/**//// <summary>
/// 從緩存中取得對象，不存在則返回null
/// </summary>
/// <param name="cacheKey">緩存鍵</param>
/// <returns>獲取的緩存對象</returns>
public static object GetFromCache(string cacheKey)
{
Cache cache = HttpRuntime.Cache;

return cache[cacheKey];
}
}
}