C# Cache 设定过期时间的方法

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1. 设定绝对过期时间

/// <summary>
/// 设定绝对的过期时间
/// </summary>
/// <param name="CacheKey">key</param>
/// <param name="objObject">缓存对象</param>
/// <param name="seconds">超过多少秒后过期</param>
public static void SetCacheDateTime(string CacheKey, object objObject, long Seconds)
{
System.Web.Caching.Cache objCache = HttpRuntime.Cache;
objCache.Insert(CacheKey, objObject, null, System.DateTime.Now.AddSeconds(Seconds), TimeSpan.Zero);
}

2.设定相对过期时间

/// <summary>
/// 设置当前应用程序指定包含相对过期时间Cache值
/// </summary>
/// <param name="CacheKey">key</param>
/// <param name="objObject">缓存对象</param>
/// <param name="timeSpan">超过多少时间不调用就失效，单位是秒</param>
public static void SetCacheTimeSpan(string CacheKey, object objObject,long timeSpan)
{
System.Web.Caching.Cache objCache = HttpRuntime.Cache;
objCache.Insert(CacheKey, objObject, null, DateTime.MaxValue, TimeSpan.FromSeconds(timeSpan));
}