Service too busy error in WCF

Question

I intermittently get the following exception in my .Net WCF Service. \"The HTTP service located at http://MyServer/TestWCF/MyService.svc is too busy.\"

Am I missing

Answer 1

It is not just the maxConcurrentSessions, it is also how long the session lasts.

If the client does not close the connection, it will remain open until it timesout. You could then hit the maxConcurrentSessions limit with very little activity on the server.