Explain in-proc,out-proc and sql server.

Answer Posted / sajid

In case of InProc, state is maintained within the managed
memory of the ASP.NET process whereas in case of OutProc
mode session is managed by an external resource (
StateServer or SQL Server )
In case of InProc, state is maintained within the managed
memory of the ASP.NET process whereas in case of OutProc
mode session is managed by an external resource (
StateServer or SQL Server )


This EggheadCafe article -
http://www.eggheadcafe.com/articles/20021016.asp has a good
comparison

Storage location

* InProc - session kept as live objects in web server
(aspnet_wp.exe). Use "cookieless" configuration in
web.config to "munge" the sessionId onto the URL (solves
cookie/domain/path RFC problems too!)
* StateServer - session serialized and stored in memory
in a separate process (aspnet_state.exe). State Server can
run on another machine
* SQLServer - session serialized and stored in SQL server

Performance

* InProc - Fastest, but the more session data, the more
memory is consumed on the web server, and that can affect
performance.
* StateServer - When storing data of basic types (e.g.
string, integer, etc), in one test environment it's 15%
slower than InProc. However, the cost of
serialization/deserialization can affect performance if
you're storing lots
of objects. You have to do performance testing for
your own scenario.
* SQLServer - When storing data of basic types (e.g.
string, integer, etc), in one test environment it's 25%
slower than InProc. Same warning about serialization as in
StateServer.

Robustness

* InProc - Session state will be lost if the worker
process (aspnet_wp.exe) recycles, or if the appdomain
restarts. It's because session state is stored in the memory
space of an appdomain. For details, see KB324772.
* StateServer - Solve the session state loss problem in
InProc mode. Allows a webfarm to store session on a central
server. Single point of failure at the State Server.
* SQLServer - Similar to StateServer. Moreover, session
state data can survive a SQL server restart, and you can
also take advantage of SQL server failover cluster, after
you've followed instructions in KB 311029.

Is This Answer Correct ?    73 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Can I customise the trace output?

866


Whats new features in Visual Studio 2012?

759


Explain about code access security?

777


How do you handle this COM components developed in other programming languages in .NET?

812


8. Oop-Why and were we use Interfacse and Abstract class.

1842


Explain pipelining? : .NET Architecture

760


Use of Enable view state ? if turn off what happen ?

4175


What is cache coherency and how is it eliminated? : Dot net architecture

732


how we can fire event in databound column in datagrid without using button?

814


Explain difference between machine config vs. Web config : Dot net architecture

698


Waht is Dot net Arcitecture

2175


What is an interrupt? : .NET Architecture

689


Explain about metadata?

755


What is an interrupt? : Dot net architecture

750


Explain what does the term "green architecture" mean? : Dot net architecture

784