Introducing the ASP.Net Async SessionState Module

SessionStateModule is ASP.NET's default session-state handler which retrieves session data and writes it to the session-state store. It already operates asynchronously when acquiring the request state, but it doesn't support async read/write to the session-state store. In the .NET Framework 4.6.2 release, we introduced a new interface named ISessionStateModule to enable this scenario.