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Which typically consumes more memory: application state or session state?

Posted By :Virendra Dugar     Posted Date :October 15, 2009    Points :10   Category :ASP.Net 
Session state tends to use much more memory than application state, because copies of all variables are stored for each user.

You can also find related Interview Question to Which typically consumes more memory: application state or session state?  below: 

Which typically consumes more memory: application state or session state?

  
Session state tends to use much more memory than application state, because copies of all variables are stored for each user. (More...)

Which might not work if a user has disabled cookies in his or her Web browser: application state or session state?

  
Session state, by default, won't work if a Web browser that supports cookies has cookies disabled. Application state isn't user-specific, though, and doesn't need to be tracked in cookies. Therefore, application state works regardless of cookies. (More...)

Which might not work if a user has disabled cookies in his or her Web browser: application state or session state?

  
Session state, by default, won't work if a Web browser that supports cookies has cookies disabled. Application state isn't user-specific, though, and doesn't need to be tracked in cookies. Therefore, application state works regardless of cookies (More...)

Session state vs View state

  
In some cases, using view state is not feasible. The alternative for view state is session state. Session state is employed under the following situations:
. Large amounts of data - View state tends to increase the size of both the HTML page sent to the browser and the size of form posted back. Hence session state is used.
. Secure data - Though the view state data is encoded and may be encrypted, it is better and secure if no sensitive data is sent to the client. Thus, session state is a more secure option.
. Problems in serializing of objects into view state - View state is efficient for a small set of data. Other types like DataSet are slower and can generate a very large view state (More...)

Session state vs. View state:

  
In some cases, using view state is not feasible. The alternative for view state is session state. Session state is employed under the following situations:
o Large amounts of data - View state tends to increase the size of both the HTML page sent to the browser and the size of form posted back. Hence session state is used.
o Secure data - Though the view state data is encoded and may be encrypted, it is better and secure if no sensitive data is sent to the client. Thus, session state is a more secure option.
o Problems in serializing of objects into view state - View state is efficient for a small set of data. Other types like DataSet are slower and can generate a very large view state. (More...)

what is session ,cache, cookie, application memory timeout?

  

Session timeout: 20 min
Cache timeout: duration we have to specify.
Cookie: for in memory cookie till browser opened
For persistent cookie timeout is till expires property's time .
Application memory timeout: till appdomain exist (More...)

What is Application State?

  
Application State is one of the Server Side State management Mechanism which stores application memory on the server rather than persisting data in the client side memory.

(More...)

What is the Limitation for Application State?

  
1)Application Object Stores State of a User In Website Itself.
2)Which Leads to Burden To The Web Application and reduces the performance
3)The Scope of Web Application holds Until Website restarts? (More...)

How to update and retrieve value from a session state object?

  
To add or update a session state item use the following syntax,
[CODE]Session["Item Name"]= value;[/CODE]
Ex:- [CODE]Session["Name"]= Abhisek;[/CODE]
You can also pass a variable.

To to retrieve a session state items value use following ,
[CODE]String name=Session["Name"].ToString();[/CODE]
You can also retrieve to other formats according the session state item's data. (More...)

How to specify session state mode in ASP.NET ?

  
stateConnectionString="tcpip=192.168.100.100:420420"
sqlConnectionString="data source=192.168.100.100; Integrated
Security=SSPI"
cookieless="false"
timeout="20"
/> (More...)

How is form session state maintained in InfoPath?

  
Sql server database:this approach is termed as using session state services.
Asp.net view stored in clients side:Termed form view (More...)

What is Shrinking Session State in ASP.NET 4.0

  
In ASP.NET 4.0 we can compress session state data, for Session-state server
and Microsoft SQL server session mode, before serializing the session data so that network load to
transfer session data can be reduced.This can be done by setting the compressionEnable to true in
the web.config file as below:

mode="SqlServer"
sqlConnectionString="data source=Test;Initial Catalog=Test"
allowCustomSqlDatabase="true" compressionEnabled="true" /> (More...)

what is application state in asp.net

  
ASP.NET allows you to save values using application state, a global storage mechanism that is accessible from all pages in the Web application. Application state is stored in the Application key/value dictionary. Once you add your application-specific information to application state, the server manages it, and it is never exposed to the client. Application state is a great place to store information that is not user-specific. By storing it in the application state, all pages can access data from a single location in memory, rather than keeping separate copies of the data. Data stored in the Application object is not permanent and is lost any time the application is restarted.
ASP.NET provides three events that enable you to initialize Application variables (free resources when the application shuts down) and respond to Application errors:

a.Application_Start: Raised when the application starts. This is the perfect place to initialize Application variables.

b.Application_End: Raised when an application shuts down. Use this to free application resources and perform logging.

c.Application_Error: Raised when an unhandled error occurs. Use this to perform error logging.

Example :
// This sets the value of the Application Variable

Application["Name"] = txtName.Text;

Response.Redirect("WebForm5.aspx");

// This is how we retrieve the value of the Application Variable

if( Application["Name"] != null )
(More...)

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