缓存管理的帮助类（更新clear）

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public class DictionaryCacheManager<TK,TV>

{

    private Dictionary<TK, TV> cacheDic = new Dictionary<TK,TV>();

    private Dictionary<TK, object> lockDic = new Dictionary<TK, object>();

 

    public TV Get(TK key,Func<TV> getValue)

    {

        if(!CheckKey(key))

        {

            CheckLock(key);

        }

         

        if(!CheckKey(key))

        {

            lock(lockDic[key])

            {

                if(!CheckKey(key)||cacheDic[key]==null)

                {

                    cacheDic[key] = getValue();

                }

            }

        }

        return cacheDic[key];

    }

 

    private object _lock = new object();

    private void CheckLock(TK key)

    {

        lock(_lock)

        {

            if(!lockDic.ContainsKey(key))

            {

                lockDic.Add(key, new object());

            }

        }

    }

 

    private bool CheckKey(TK key)

    {

        return cacheDic.ContainsKey(key);

    }

 

    public void Clear()

    {

        lock(_lock)

        {

            lockDic.Clear();

            cacheDic.Clear();

        }

    }

    public void Clear(TK key)

    {

        lock(lockDic[key])

        {

            cacheDic.Remove(key);

        }

    }

}

 

很简单