Delay between PostMapRequestHandler event and AcquireRequestState event

Question

I encounter a strange delay between subject events (more or less than 500 ms every call).

I posted the logs and profiling in the handlers in Global.asax Application_PostMapRequestHandler() and Application_AcquireRequestState() and found such a problem.

What is the reason for this slowness?

Answer 1

This is because if the session state is enabled for the controller, then only one request will be performed for each session.

Further information is available in the next answer - see the second answer.

IRequiresSessionState vs IReadOnlySessionState