/// <summary>
/// 将对象插入到缓存管理器中。
/// </summary>
/// <typeparam name="T">缓存对象的类型。</typeparam>
/// <param name="cacheKey">用于引用对象的缓存键。</param>
/// <param name="value">要插入到缓存的对象。</param>
/// <param name="expiration">判断对象过期的对象。</param>
/// <param name="removeCallback">当对象从缓存中移除时，使用该回调方法通知应用程序。</param>
public T Add <T>(string cacheKey, T value, ICacheItemExpiration expiration, Fireasy.Common.Caching.CacheItemRemovedCallback removeCallback = null)
{
if (expiration is FileDependency)
{
webCache.Insert(cacheKey, value, new CacheDependency((expiration as FileDependency).FilePath));
}
else
{
var expire = TimeSpan.Zero;
if (expiration is NeverExpired)
{
expire = Cache.NoSlidingExpiration;
}
else if (expiration is AbsoluteTime)
{
expire = (expiration as AbsoluteTime).ExpirationTime - DateTime.Now;
}
else if (expiration is RelativeTime)
{
expire = (expiration as RelativeTime).Expiration;
}
return(Add(cacheKey, value, expire, removeCallback));
}
return(value);
}
/// <summary>
/// 将对象插入到缓存管理器中。
/// </summary>
/// <typeparam name="T">缓存对象的类型。</typeparam>
/// <param name="cacheKey">用于引用对象的缓存键。</param>
/// <param name="value">要插入到缓存的对象。</param>
/// <param name="expire">对象存放于缓存中的有效时间，到期后将从缓存中移除。如果此值为 null，则默认有效时间为 30 分钟。</param>
/// <param name="removeCallback">当对象从缓存中移除时，使用该回调方法通知应用程序。</param>
public T Add <T>(string cacheKey, T value, TimeSpan?expire = null, Fireasy.Common.Caching.CacheItemRemovedCallback removeCallback = null)
{
var expireDate = DateTime.Now.Add(expire != null ? (TimeSpan)expire : TimeSpan.FromMinutes(30));
webCache.Insert(
cacheKey,
value,
null,
expireDate,
Cache.NoSlidingExpiration,
CacheItemPriority.Normal,
(k, v, r) =>
{
if (removeCallback != null)
{
removeCallback(k, v);
}
});
return(value);
}