自写缓存类

public class MyCache
{
    /// <summary>
    /// 插入一个缓存
    /// </summary>
    /// <param name="name">缓存键</param>
    /// <param name="value">缓存值</param>
    /// <param name="isAbsoulute">是否使用绝对过期，是则为true否则为false</param>
    /// <param name="isOverride">如果缓存存在，是否覆盖缓存值</param>
    /// <param name="absoluteDate">绝对过期时间</param>
    /// <param name="spacing">相对过期的时间间隔</param>
    /// <param name="dep">缓存依赖</param>
    /// <param name="removeddCallback">缓存被移除时调用的委托</param>
    /// <param name="priority">缓存优先级</param>
    public static void Insert(string name, object value, bool isAbsoulute, bool isOverride, DateTime absoluteDate, TimeSpan spacing, CacheDependency dep, CacheItemRemovedCallback removeddCallback, CacheItemPriority priority)
    {

        Cache cache = HttpContext.Current.Cache;
        //如果此键的缓存已存在
        if (cache[name] != null)
        {
            //如果覆盖缓存值
            if (isOverride)
            {
                cache.Remove(name);
                InsertInternal(name, value, isAbsoulute, absoluteDate, spacing, dep, removeddCallback, priority);
            }
            else
            {
                return;
            }
        }
        InsertInternal(name, value, isAbsoulute, absoluteDate, spacing, dep, removeddCallback, priority);
    }

    /// <summary>
    /// 根据键名，获取缓存，如果缓存不存在，则调用返回缓存值的委托
    /// </summary>
    public static object GetCache(string name, Func<object> func, bool isAbsoulute, bool isOverride, DateTime absoluteDate, TimeSpan spacing, CacheDependency dep, CacheItemRemovedCallback removeddCallback, CacheItemPriority priority)
    {
        Cache cache = HttpContext.Current.Cache;
        if (cache[name] != null)
        {
            return cache[name];
        }
        else
        {
            object obj = func();
            Insert(name, obj, isAbsoulute, isOverride, absoluteDate, spacing, dep, removeddCallback, priority);
            return obj;
        }
    }

    /// <summary>
    /// 内部方法
    /// </summary>        
    static void InsertInternal(string name, object value, bool isAbsoulute, DateTime absoluteDate, TimeSpan spacing, CacheDependency dep, CacheItemRemovedCallback callback, CacheItemPriority priority)
    {
        Cache cache = HttpContext.Current.Cache;
        if (isAbsoulute)
        {
            cache.Insert(name, value, dep, absoluteDate, TimeSpan.Zero, priority, callback);
        }
        else
        {
            cache.Insert(name, value, dep, DateTime.MaxValue, spacing, priority, callback);
        }
    }
}