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Asked: 2026-06-04T01:26:43+00:00

I have a WCF Singleton service with Attributes [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple, InstanceContextMode = InstanceContextMode.Single)]

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I have a WCF Singleton service with Attributes [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple, InstanceContextMode = InstanceContextMode.Single)] that uses wsDualHttpBinding and allows the user to call in a database request. These requests can be very long running and will often timeout. I used the example given here that I found in another answer on SO. I have everything implemented and everything works correctly, however I am concerned about what will happen when multple clients attach to my service at the same time. I have set the ConcurrencyMode to Multiple, but I’m not sure that will give me what I need.

My question is, do I have to create a new thread on the serverside each time a client calls in or does WCF handle that for me by hosting my OperationContracts in seperate threads?

Thanks for your help!

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1 Answer

  1. Editorial Team

    WCF will create the thread for every call from the client side.

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