Personally we use SQL Server if we must for web server farms–slower but can be shared. This generated SessionId is stored at server as well as it is passed to the client.
To configure SQLServer mode for a Web farm in the configuration file for each Web server set the sessionState elements sqlConnectionString attribute to point to the same SQL Server database.
Session state server web config. One of the significant problems is that sessions stored InProc are deleted every time when application restarts. Session State provides a feature called Partitioning where you can spread your state over multiple SQL Servers. On the Session State page in the Session State Mode Settings area click State Server.
State Server – In this mechanism a Windows service is used to store the session information. Since session data are stored using Windows service and outside of ASPNET application process session variables are intact when ASPNET application restarts. When the server restarts then existing data is lost.
Default mode InProc is fastest and default mode but not useful in many scenarios. You can store the session state in three possible locations within the SQL Server. Configuring SQL Server to Store a Session State Before you can actually store a session state in SQL server you need to configure it.
If you modify the Globalasax file and the WebConfig file for an ASPNET application then the application will be restarted and all the session data will be lost. In ASPNET the default name is ASPNET_SessionId. But they will be deleted if State Server restart.
This immediately gives away that the application is ASPNET and that that cookie contains the session ID value. The session data is stored in the application domain of the web server. The session information is stored on the web server using the session identifier session ID generated as a result of the first sometimes the first authenticated request from the end user running a web browser.
To implement ASPNET SQL Server mode session state management you must modify the element of your applications Webconfig file as follows. State server is installed as a part of installing theNET Framework. It should be noted that there should be only one state server instance running per server farm so that sessions may be shared.
You can also configure session state by using the EnableSessionState value in the Page directive. To turn off session state completely select Off from the session state mode control. Change the default session ID name.
The Enable-SPSessionStateService cmdlet creates a session state database installs the ASPNET session state schema and updates the Webconfig files on the farm to turn on the session state service. Open the WebConfig file and go to the Session State configuration file element and specify the mode as. ASPNET session state settings can be made in the machine configweb file and overridden in a particular applications configweb file.
In Features View double-click Session State. Storing Session State InProc. ASPNET Session State allows four modes to specify where you want to store session data.
The webconfig configuration looks like. You can provide a function to select the SQL Server based on the session id SID. We use State Server if the site will only be hosted on a single web server–state survives AppDomain restarts but not entire server restarts.
This step-by-step article demonstrates how to configure Microsoft SQL Server for ASPNET SQL Server mode session state management. Now let me demonstrate to store the Session State out-of-proc in the State Server in the local or remote NT Service. Set the mode attribute of the element to SQLServer to indicate that session state is stored in SQL Server.
InProc SQLServer State Server and Custom. Recommended length is. This configuration is done via a command line tool called ASPNET_REGSQLEXE.
Configuring Session State Session state is configured by using the sessionState element of the systemweb configuration section. In StateServer mode sessions are stored using State Server windows service in aspnet_stateexe process. The ASPNET session state configuration tool available through IIS will touch your Web sites WebConfig file and insert the right configuration strings to enforce the settings you choose.
See Session-State Modes for documentation on how to use each and the pros and cons of the three different types. The trick is that you can use this feature with ONE server just to choose the server dynamically. Introduction to sessions states and explains the situation where a web site is hosted by multiple web servers it becomes necessary to use something like the SQL Server feature that offers centralized storage of a session state in a Web farm.
Make sure the length of the session ID is long enough to prevent brute force attacks. Best practices for the session state. Changes made to configweb are applied immediately unlike classic ASP where the server has to be stopped and started for settings to take affect.
The path for the ASPNET application in the IIS metabase must be identical on all Web servers that share session state in the SQL Server database. The sessionState element enables you to specify the following options. To configure a state server to maintain session state by using the UI Open IIS Manager and navigate to the level you want to manage.