是否可以在C#中创建有状态的Web服务？

Question

我现在有这样的事情:

public class Service1 : System.Web.Services.WebService
{
    [WebMethod]
    public string Method1()
    {
        SomeObj so = SomeClass.GetSomeObj(); //this executes very long time, 50s and more
        return so.Method1(); //this exetus in a moment 
    }

    [WebMethod]
    public string Method2()
    {
        SomeObj so = SomeClass.GetSomeObj(); //this executes very long time, 50s and more
        return so.Method2(); //this exetus in a moment 
    }

 ...
}

有可能创建有状态的Web服务,以便我可以重用SomeObj so并只调用同一对象上的方法吗？

因此,将使用此服务的客户端将首先调用web方法,该方法将创建so对象并返回一些ID.然后在后续调用中,Web服务将so基于ID 重用相同的对象.

编辑

---

这是我的实际代码:

[WebMethod]
public List<ProcInfo> GetProcessList(string domain, string machineName)
{
    string userName = "...";
    string password = "...";
    TaskManager tm = new TaskManager(userName, password, domain, machineName);

    return tm.GetRunningProcesses();
}

[WebMethod]
public bool KillProcess(string domain, string machineName, string processName)
{
    string userName = "...";
    string password = "...";
    (new TaskManager(userName, password, domain, machineName);).KillProcess(processName);               
}

Answer 1

有状态的Web服务不可扩展,我不推荐它们.相反,您可以将昂贵操作的结果存储在缓存中.此缓存可以通过自定义提供程序分发,以获得更好的可伸

[WebMethod]
public string Method1()
{
    SomeObj so = TryGetFromCacheOrStore<SomeObj>(() => SomeClass.GetSomeObj(), "so");
    return so.Method1(); //this exetus in a moment 
}

[WebMethod]
public string Method2()
{
    SomeObj so = TryGetFromCacheOrStore<SomeObj>(() => SomeClass.GetSomeObj(), "so");
    return so.Method2(); //this exetus in a moment 
}

private T TryGetFromCacheOrStore<T>(Func<T> action, string id)
{
    var cache = Context.Cache;
    T result = (T)cache[id];
    if (result == null)
    {
        result = action();
        cache[id] = result;
    }
    return result;
}