How to cache COM Object to not create/dispose it for each request?

Question

I have an asp.net web-api2 application which is using COM object for interacting with data. I have an Engine object that is working with it. Like this:

public class PVXEngine : IDisposable
{
    protected DispatchObject _pvxObject;
    public PVXEngine()
    {
       _pvxObject = new DispatchObject("ProvideX.Script");
    }

    public void Dispose()
    {
       _pvxObject.Dispose();
    }
}

I don't want to recreate this object for every request. How can i store my PVXEngine in my Application Context to not recreate it. ( I guess it will be disposed when Application Pool Recyles. )

Also if it is possible, refer me documentation where I can read about caching objects in Application Pool.

Thank you for your time.

score 1 · Accepted Answer · edited May 23 '17 at 12:06

1

Make the PVXEngine a class variable. This assumes that the object is thread safe.

 public class PVXEngine : IDisposable
 {
     static protected DispatchObject _pvxObject = new DispatchObject("ProvideX.Script");
 }

If the object is not thread safe then I suggest using a resource pool as specified in C# Object Pooling Pattern implementation.

edited May 23 '17 at 12:06

Community

1
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answered Aug 20 '15 at 06:18

Richard Schneider

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Thank You, Where I can find documentation to understand how static objects are stored in Application Pool ? Or am I wrong ? – bot_insane Aug 20 '15 at 06:42
A static object is only created once for the entire process. More info can be found in the C# spec. – Richard Schneider Aug 20 '15 at 06:59

How to cache COM Object to not create/dispose it for each request?

1 Answers1