在同一个AppPool中跨应用程序共享变量? [英] Shared variable across applications within the same AppPool?

问题描述

我正在使用 Asp.net FW 4.6.

I'm using Asp.net FW 4.6.

我在同一应用程序池下有两个应用程序，它们需要(恒定地)读取预定义的值，该值是要更改的对象.

I have two applications under the same application pool that need to read (constantly) a predefined value which is object to change.

不能使用静态变量，因为不会共享不同的应用程序(即使在同一应用程序池下).

Static variables can't be used because different apps (even under same app pool) - won't be shared.

DB/文件/服务器是已知选项.

DB/File/Server are known options.

但是:

问题:

我是否可以编写任何可以存储在mem值中的代码，这些代码可以通过同一应用程序池下的多个应用程序进行访问?

Is there any code that I can write that can store in mem value which will be accessible through multiple applications which are under the same App Pool ?

类似的东西:

MyAppPool  

    App1   -> func("royi") = 1
    App2   -> var a= func2("royi"); //1

推荐答案

所有进程间通信方式，例如内存映射文件和在两个应用程序之间共享内存.

All ways of interprocess communication, such as Memory Mapped Files and Named Pipes can also be used for sharing data across applications within single AppPool, see for example Sharing memory between two applications.

由于同一AppPool中的所有应用程序都驻留在同一进程中，并且仅由AppDomain边界分隔，因此您还有其他一些选择:

Because all apps in the same AppPool resides in the same process and are separated just by AppDomain boundaries, you have some additional options:

• 使用 MarshalByRefObject 跨AppDomain边界访问对象实例.有使用MarshalByRefObject实现的现有包装器跨AppDomain单例，例如 StephenCleary 的 CrossDomainSingleton 或此一个.
• 使用指针和不安全代码直接访问

• Use MarshalByRefObject to access object instance across AppDomain boundaries. There are already available wrappers that uses MarshalByRefObject to implement cross-AppDomain singleton, for example Stephen Cleary's CrossDomainSingleton or this one.
• Use pointers and unsafe code to directly access memory allocated by Marshal.AllocHGlobal, especially if speed is your concern. But you will have to use one of the aforementioned methods to share memory address of allocated memory between applications.

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