It is also not suitable for Web Farm and Web Garden scenarios. Now we will have a look at the other options available to overcome these problems. First is the StateServer mode. This is also called Out-Proc session mode. This server may run on the same system, but it's outside of the main application domain where your web application is running. This means if you restart your ASP.
NET process, your session data will still be alive. This approache has several disadvantages due to the overhead of the serialization and de-serialization involved, it also increases the cost of data access because every time the user retrieves session data, our application hits a different process. NET state service is set to Manual; we need to set it to Automatic.
By default, this service listens to TCP port , but we can change the port from the Registry editor as shown in the picture below:. Now have a look at the web. For the StateServer setting, we need to specify the stateConnectionString.
This will identify the system that is running the state server. By default, stateConnectionString uses IP Now let"s us try to understand the difference between inproc and outproc mode in session state using code.
Open Visual Studio then create a new project. Select Web - ASP. Add new Web Form Login. Store the User Name logged in by user in the session indexed by User Name. Redirect the user to the Home Page on click of the button. I hope my article is useful for all those who are new in the field of ASP. Net and finding their future in the ASP. Net domain. Session State is quite useful for the purpose of interviews. I have tried my best to summarize Session State, still if anyone has questions then please provide me your valuable suggestions.
Net Session state Asp. Net Page Life Cycle Asp. Add a comment. Active Oldest Votes. Improve this answer. Haseeb Asif Haseeb Asif 1, 2 2 gold badges 22 22 silver badges 37 37 bronze badges. Sign up or log in Sign up using Google.
Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Explaining the semiconductor shortage, and how it might end. Does ES6 make JavaScript frameworks obsolete? Featured on Meta. To start the service, open a command prompt and type:.
Figure 1. Next, we need to configure ASP. NET to take advantage of this service. To do this we need to configure config. We changed only from inproc mode to stateserver mode. This setting tells ASP. NET to look for the ASP state service on the server specified in the server and port settings-in this case, the local server.
We can now call SessionState. This script creates two tables and several stored procedures. I would recommend reading through state. To apply the state. Using an sa equivalent SQL user, the syntax below is used:. Figure 2. Using the SQL Server command line tool to apply state. Next, modify the configuration settings to set the mode to sqlserver and modify the sqlconnectionstring to identify the appropriate SQL Server serving the ASPState database.
For example:. In fact, we could cluster the SQL Servers such that if one SQL Server happened to be unavailable, another server that was replicating its data could take its place. This provides a level of reliability that was not available in ASP.
The last new feature that we can configure for ASP. NET session state is cookieless session state. Essentially this feature allows sites whose clients choose not to use cookies to take advantage of ASP. NET will modify relative links found within the page and embed this ID. Thus, as long as the user follows the path of links the site provides, session state can be maintained.
However, if the end user re-writes the URL, the session state instance will most likely be lost. The IIS 4. It was implemented as an ISAPI filter that could modify the incoming and outgoing byte stream to write and read the necessary information. The difference between this and the ASP. NET feature is the effort required to use the feature.
In ASP. Once cookieless is set to true, ASP. NET will do the work necessary to enable cookieless session state. Also note that all modes are supported for cookieless sessions. NET session state modes. Subscribe to Blog via Email Enter your email address to subscribe to this blog and receive notifications of new posts by email.
Email Address. Process dependent. ASP session state exists in the process that hosts ASP; thus the actions that affect the process also affect session state.
When the process is recycled or fails, session state is lost. Server farm limitations. As users move from server to server in a Web server farm, their session state does not follow them. ASP session state is machine specific. Each ASP server provides its own session state, and unless the user returns to the same server, the session state is inaccessible.
While network IP level routing solutions can solve such problems, by ensuring that client IPs are routed to the originating server, some ISPs choose to use a proxy load-balancing solution for their clients. Most infamous of these is AOL.
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