只读词典 - 多个线程调用.ContainsKey方法 [英] Read only Dictionary - multiple threads calling .ContainsKey method

问题描述

我有一个静态的只读字典。 否修改将本字典的。

I have a static readonly dictionary. No modifications will be made to this dictionary.

我有多个线程使用.ContainsKey（关键）这本词典阅读。 。例如

I have multiple threads reading from this dictionary using the .ContainsKey(Key). e.g.

class MyData
{ 
    private static private IDictionary<int, string> _dictionary = new Dictionary<int, string>();

    MyData()
    {
        // Load Dictionary here
    }

    public string GetValue(int key)
    {
        if (_dictionary.ContainsKey(key))
        { 
            return _dictionary[key];   
        }
    }
}

是否有任何线程问题这样

Are there any threading problems with doing this?

推荐答案

如果没有人变异它？这是好的。如果有偶尔的编辑，那么也许看看ReaderWriterLockSlim，或（我的偏好）编辑快照/复制和交换的参考。

If nobody is mutating it: this is fine. If there were occasional edits, then perhaps look at ReaderWriterLockSlim, or (my preference) edit a snapshot/copy and swap the reference.

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