I am trying to Invoke a website hosted on IIS at a particular interval automatically.
Steps that I followed.
1. I tried to invoke the website on app pool recycle period. But none of the events on Global file are invoked on app pool recycle.
2. Application_End on Global file is invoked on app pool recycle only if web-site is active.
3. Is there any way to invoke the global file events on app pool recycle ?
4. Is there any other way, so that,I can invoke the website at a particular interval automatically.
Please advice..
Related
I have encountered a (mis?)behavior of IIS/ASP.NET related to app pool suspension (Idle Worker Process Page-Out), and I can't find documentation about it. When an ASP.NET app (.NET Framework 4.8) in IIS (10.0) is suspended, and then a change is made to IIS configuration, the next time the app is accessed, it restarts (new AppDomain in same w3wp process).
It doesn't matter What is changed in IIS (appcmd add apppool, appcmd add app, etc.). Even touching applicationhost.config (changing LastWriteTime without content change) is enought to fire a restart. To be clear, the restart only happens if the app is SUSPENDED when IIS configuration is changed, and not if the app is live.
We have a lot of apps in the same IIS server, with frequent app deployments, and each time a deployment is made, all the suspended apps are affected (next user must wait the restart time). This renders useless the suspension mechanism. ¿Is this restart behavior by design or it's a bug? ¿Is there a way to prevent it?
What I want is that my Application_Start in Global.asax (Or any other piece of code) runs automatically whenever application pool/Application restarts in IIS. Application_Start gets triggered on the first request but I don't want to wait for the first request, but I want to do something whenever my Web API is deployed and started.
So, Is there any way via code (Not at IIS Level) that can achieve the above?
I'm not absolutely sure but you can try set "Start Mode = Always Running" for your application pool.
Edit 1: This should enforce IIS to directly load/reload your application pool and thus triggering Application_Start of your Global.asax
Edit 2
Just to make it clear, this is what i meant.
Go to application pools
Right Click your application pool
Go to advanced settings
Change OnDemand to AlwaysRunning
Yes this is not code based. But as of I know you have to configure application pool to achieve what you want.
Maybe you want to check this too (contains samples for code based app pool configuration): Application Pool Defaults
Everytime we publish our .NET app on Azure, all users are bein logged off and to sign in again, what our users won't understand. The user sessions are implemented using the SimpleMembership provider.
Is there any way to keep user sessions alive, even after we update our app?
I think you have misunderstood what publishing does. When you publish the application it will create a new instance of the w3wp.exe process. This is the web process where the application memory is stored (keeping it simple). If you publish you are creating a new instance and the old is getting destroyed.
All sessions will be lost.
For example, every time you publish the website, it will make a change to web.config. This will cause the application to unload and IIS to recycle.
Causes:
Web.config Changes
bin folder content change
Manual IIS
applicaiton pool recycle
If you need to keep your sessions alive then you should look at Session-State Modes
Is there a way to recycle and afterwards reload an application pool?
My problem has been slow performance when logging in to my web application. I found out that the "Idle Time-out(minutes)" was sat to 20 by default. This caused the application to terminate when idle so that it can start up again on the next visit. After searching the web i found out that this value could be sat to 0 so it won't terminate. However, the first visit after recycling, an app pool have to create a new w3wp.exe worker process which is slow because the app pool needs to be created, ASP.NET or another framework needs to be loaded, and then the application needs to be loaded. Source right here
This means that every time the app recycles, the first visitor have to wait longer then the other visitors when logging in, doing some stuff and log out.
The web application is using the ISS from Dynamics AX 2009.
Sorry I thought you are working on IIS 7.5
But there was a beta for this in IIS7 actually.
I think you are looking something along the lines of this
A warmup module for IIS 7.5
"IIS Application Initialization for IIS 7.5 enables website administrators to improve the responsiveness of their Web sites by loading the Web applications before the first request arrives. By proactively loading and initializing all the dependencies such as database connections, compilation of ASP.NET code, and loading of modules, IT Professionals can ensure their Web sites are responsive at all times even if their Web sites use a custom request pipeline or if the Application Pool is recycled. While an application is being initialized, IIS can also be configured to return an alternate response such as static content as a placeholder or "splash page" until an application has completed its initialization tasks."
Download Link
http://www.iis.net/downloads/microsoft/application-initialization
And also have a look at this; which basically talks about using warm up classes which comes with ASPNET 4
http://weblogs.asp.net/gunnarpeipman/archive/2010/01/31/asp-net-4-0-how-to-use-application-warm-up-class.aspx
Checkout the suspend option.
IIS now has
Idle Time-out Action : Suspend setting
Suspending is just freezes the process and it is much more efficient than the destroying the process. Because it uses the same process and does not create another one after waking up.
Ok so I understand how app pools work and what they do but I am wondering what exactly the app pool is, I am thinking at the moment that it is just information the metabase or some config file for use with http.sys?
I suppose another questions is, who or what spawns the worker process when a request is made?
thanks
The confused
First you can see the application pool as the program that actually is one with your pages and runs them. So what ever you make programmatically on your pages are done using the application pool.
For example:
user request the page a.aspx
IIS see that is asp.net page and assign it to one app pool
application pool see the a.aspx, check if is complied, and runs it - run your code.
Second you can see the big view, that there are many web sites lives together on one server and application pool is handle one or more web sites together.
Now, a web application can be run on one application pool, or on many application pools at the same time on the same server (this is called web garden). An in each of that you can run many threads.
Now for more details you can read the official microsoft pages.