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How to have only one instance of webmethod running
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eSapient
Jun 13, 2003, 6:37:02 AM6/13/03
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How can I ensure that only one instance of my webmethod is running at any
particular instant and that other instances are queued and not started? I
need to do this because my webmethod takes a long time to complete, and the
sum of the memory consumed by many different instances of my webmethod could
trip the memory limit.
particular instant and that other instances are queued and not started? I
need to do this because my webmethod takes a long time to complete, and the
sum of the memory consumed by many different instances of my webmethod could
trip the memory limit.
MV
Jun 13, 2003, 9:00:54 PM6/13/03
to
Have you considered the use of .NET serviced components? .NET has a built-in
mechanism for invoking a method call on an object: using a delegate
asynchronously. The client creates a delegate class that wraps the method it
wants to invoke synchronously, and the compiler provides definition and
implementation for a BeginInvoke( ) method, which asynchronously calls the
required method on the object. The compiler also generates the EndInvoke( )
method to allow the client to poll for the method completion. Additionally,
.NET provides a helper class called AsyncCallback to manage asynchronous
callbacks from the object once the call is done.
mechanism for invoking a method call on an object: using a delegate
asynchronously. The client creates a delegate class that wraps the method it
wants to invoke synchronously, and the compiler provides definition and
implementation for a BeginInvoke( ) method, which asynchronously calls the
required method on the object. The compiler also generates the EndInvoke( )
method to allow the client to poll for the method completion. Additionally,
.NET provides a helper class called AsyncCallback to manage asynchronous
callbacks from the object once the call is done.
Your webmethod could then call this serviced component instead of performing
the long-running process itself.
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