ASP.NET MVC and Ajax, concurrent requests?

Question

AJAX newbie here!
At the moment in my ASP.NET MVC web app my AJAX requests appear to be getting batched or queued, im not sure.
No requests seem to be getting comp

Answer 1

ASP.NET will serially process requests on a per-session basis unless sessions are configured as disabled or read only in web.config via the enableSessionState attribute on the pages element.

As this is a page setting, this will not affect MVC controllers and they will still be subject to serial request processing.

Curiously, even with sessions disabled or set to readonly, we can still read and write session data. It seems to only affect the session locking that causes serial request processing.

Pages can also have an enableSessionState property, though this is not relevant to MVC views.

<%@ Page EnableSessionState="True" %>