Does anyone know how the WCF ServiceBehavoir.InstanceContexMode is affected when hosting the WCF service in Azure?
A service that is configured for PerCall instancing, and handles multiple concurrent requests on-prem, does not seem to process more than 2 concurrent requests when hosted in Azure. Are there other settings that will throttle the requests?
UPDATE: It appears that the limitation was due to client-side testing issues - restrictions on concurrent outbound http connections from the same machine, and not server side settings.
Being new to Azure, I had mistakenly thought that Azure's instancing and scaling options might be overriding what I had configured in WCF ServiceBehavoir, but this was a red herring.
The client-side restrictions were increased by altering the following registry entry on the client PC used for testing...
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
Once I had done this, I was able to test multiple concurrent connections to my Cloud Service from the same client PC, and with only a single 'instance' running in Azure.