WCF静态变量获得复位每个调用 [英] WCF Static Variable Getting Reset with Each Call

问题描述

我有一个WCF服务，我来自多个客户端调用。我需要存储和管理全球的值。在我的服务，我有以下属性：

I have a WCF service that I am calling from multiple clients. I need to store and manage a value globally. On my service I have the following attributes:

[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Single)]

在我的服务，我有类似这样：

In my service I have something similar to this:

private static int counter;

public void PrintCounter()
{
    counter++;
    StreamWriter sw = new StreamWriter(@"C:\outFile.txt", true);
    sw.WriteLine("Counter: " + counter);
    sw.Close();
}

使用WCF的我有限的知识，我想presume，我有一个单身的服务，事实证明我的私有变量是静态的，所有调用该服务将使用同一个对象。

With my limited knowledge of WCF, I would presume that I have a Singleton service and the fact that my private variable is static, that all calls to the service would use the same object.

不过，当我看着我的日志输出，我看到以下内容：

However, when I look at my log output, I see the following:

Counter: 1
Counter: 1

我希望看到将是：

What I expected to see would be:

Counter: 1
Counter: 2

我缺少的东西，使这项工作，我需要它的方式？我需要存储对象的某种缓存？任何帮助是极大的AP preciated。

Am I missing something to make this work the way I need it to? Do I need to store objects in some sort of cache? Any help is greatly appreciated.

如果需要，我可以发布更多codeD。

I can post more coded if needed.

推荐答案

因为它是一个单服务，例如：只有一个实例将永远存在的，为什么你不使这个普通类成员变量？

Since it's a singleton service, e.g. only one instance will ever exists of it, why don't you make this a regular class member variable??

由于ConcurrencyMode设为单，太 - 你甚至不必担心并发访问的变量

Since the ConcurrencyMode is set to single, too - you don't even have to worry about concurrent access to the variable.

在另一方面 - 单用ConcurrencyMode =单是导致一个真的很慢的服务，它可能很快成为一个瓶颈 - 所以你可能要设定您的code以这样一种方式，它也将下工作ConcurrencyMode =多具有潜在的并发访问成员变量。

On the other hand - singleton with ConcurrencyMode=Single is a recipe for a really really slow service which might become a bottleneck quickly - so you might want to program your code in such a way that it would also work under ConcurrencyMode=Multiple with potentially concurrent access to the member variable.

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