ConfigurationSettings.AppSettings vs. IIS Application

[JMD]

I am curious to know if there are performance issues in choosing between A and B. Which performs best?

A. store string values in the web.config and pull them using ConfigurationSettings.AppSettings

B. Use Application_OnStart to store string values in Application variables

[Henry Johnson]

You might get opinions on this (which may be more or less valid), or you can
get more objective results by using Microsoft Application Center Test (ACT)
which ships with Visual Studio.NET. You can set up fairly simple scripts and
run a test between competing scenarios to see which perform the best.

http://msdn.microsoft.com/library/de...l_ref_prps.asp
http://msdn.microsoft.com/library/de...l_ref_prps.asp

Good Luck

"JMD" <JM*@discussions.microsoft.com> wrote in message
news:E1**********************************@microsof t.com...

I am curious to know if there are performance issues in choosing between A and B. Which performs best?
A. store string values in the web.config and pull them using ConfigurationSettings.AppSettings
B. Use Application_OnStart to store string values in Application variables

[Paul Glavich [MVP - ASP.NET]]

I would guess that the Application variables would be faster. The Web.config
is cahced anyway, but Application_Variables are "permanently cached" in a
manner of speaking.

Storing data in static variables/static class properties would be faster
than both of them.

--
- Paul Glavich
Microsoft MVP - ASP.NET
"Henry Johnson" <ok**@dokey.com> wrote in message
news:uA**************@tk2msftngp13.phx.gbl...

You might get opinions on this (which may be more or less valid), or you can get more objective results by using Microsoft Application Center Test (ACT) which ships with Visual Studio.NET. You can set up fairly simple scripts and run a test between competing scenarios to see which perform the best.

http://msdn.microsoft.com/library/de...l_ref_prps.asp http://msdn.microsoft.com/library/de...l_ref_prps.asp
Good Luck

"JMD" <JM*@discussions.microsoft.com> wrote in message
news:E1**********************************@microsof t.com...

I am curious to know if there are performance issues in choosing between

A and B. Which performs best?

A. store string values in the web.config and pull them using ConfigurationSettings.AppSettings

B. Use Application_OnStart to store string values in Application

variables

[John Saunders]

"JMD" <JM*@discussions.microsoft.com> wrote in message
news:E1**********************************@microsof t.com...

I am curious to know if there are performance issues in choosing between A and B. Which performs best?
A. store string values in the web.config and pull them using ConfigurationSettings.AppSettings
B. Use Application_OnStart to store string values in Application variables

Actually, if you're concerned about performance, you might want to do
performance testing in your own environment. If there were performance
differences, they might depend on the environment.

As it happens, there would be little difference, except perhaps readability
differences. ConfigruationSettings.AppSettings caches the values from
web.config, so even if you reference them on every page, there should be
little performance hit.
--
John Saunders
johnwsaundersiii at hotmail

[Scott Allen]

My guess is that most applications wouldn't notice a signifigant
performance difference between the two options. My only concern with
Application variables is that the runtime has to acquire a
ReaderWriter lock before retrieving an object from the collection.
This should not be a signifigant overhead in most applications, but
only some testing and benchmarking could tell.

Another option is to expose the strings through static properties on a
class, perhaps the Global class in global.asax. Read them once from
web.config and then they are easy to grab from anywhere in your code
with code like Global.MyString. The other benefit of this approach is
that the source of the string, be it the web.config file or somewhere
else is abstracted away.

--
Scott
http://www.OdeToCode.com

On Tue, 29 Jun 2004 19:21:02 -0700, JMD
<JM*@discussions.microsoft.com> wrote:

I am curious to know if there are performance issues in choosing between A and B. Which performs best?

A. store string values in the web.config and pull them using ConfigurationSettings.AppSettings

B. Use Application_OnStart to store string values in Application variables