C#缓存公用方法cache

public class CacheHelper
{
public static IMemoryCache _memoryCache = new MemoryCache(new MemoryCacheOptions());

/// <summary>
/// 缓存绝对过期时间
/// </summary>
///<param name="key">Cache键值</param>
///<param name="value">给Cache[key]赋的值</param>
///<param name="minute">minute分钟后绝对过期</param>
public static void CacheInsertAddMinutes(string key, object value, int minute)
{
if (value == null) return;
_memoryCache.Set(key, value, new MemoryCacheEntryOptions()
.SetAbsoluteExpiration(TimeSpan.FromMinutes(minute)));
}

/// <summary>
/// 缓存相对过期，最后一次访问后minute分钟后过期
/// </summary>
///<param name="key">Cache键值</param>
///<param name="value">给Cache[key]赋的值</param>
///<param name="minute">滑动过期分钟</param>
public static void CacheInsertFromMinutes(string key, object value, int minute)
{
if (value == null) return;
_memoryCache.Set(key, value, new MemoryCacheEntryOptions()
.SetSlidingExpiration(TimeSpan.FromMinutes(minute)));
}

/// <summary>
///以key键值，把value赋给Cache[key].如果不主动清空，会一直保存在内存中.
/// </summary>
///<param name="key">Cache键值</param>
///<param name="value">给Cache[key]赋的值</param>
public static void CacheInsert(string key, object value)
{
_memoryCache.Set(key, value);
}

/// <summary>
///清除Cache[key]的值
/// </summary>
///<param name="key"></param>
public static void CacheNull(string key)
{
_memoryCache.Remove(key);
}

/// <summary>
///根据key值，返回Cache[key]的值
/// </summary>
///<param name="key"></param>
public static object CacheValue(string key)
{
return _memoryCache.Get(key);
}

}