Parallel processing of concurrent Ajax requests in Asp.Net MVC

http://www.stefanprodan.eu/2012/02/parallel-processing-of-concurrent-ajax-requests-in-asp-net-mvc/

If you want to enable a certain controller to process requests in parallel from a single user, you can use an attribute named SessionState that was introduced in MVC since version 3. It’s not necessary to use a session-less controller in order to achieve parallelism, the Ready-only option of theSessionStateBehavior will let you pass security checks you may have implemented based on Session data.

ParallelController.cs

    [SessionState(System.Web.SessionState.SessionStateBehavior.ReadOnly)]
    [OutputCache(NoStore = true, Duration = 0, VaryByParam = "*")]
    public class ParallelController : Controller
    {
        public JsonResult Get1()
        {
            //read from session
            var x = Session["call"];
            Thread.Sleep(5000);
            return Json(new { obj = "p1" }, JsonRequestBehavior.AllowGet);
        }

        public JsonResult Get2()…
        public JsonResult Get3()…