I wanted to understand the behavior of HttpContext.Current.Application during the load balancing. I have read that session can be stored in disk hence can be retrieved from different servers. Is this true for HttpContext.Current.Application also. Does the keydata stored in one machine is accessible in other different machine too?
View 1 RepliesWe have an ASP.NET application deployed on 2 Application servers with load balancer server. It is using INPROC state management. The ADO.NET connection pooling is enabled with 50 as minimum connections and 100 maximum connections.
In Load testing (using load testing tool) when the application reaches to 50 users no more users can connect (login) to application the TPS reaches zero. No errors are logged in application log related to application or database. The sessions are working fine.
I have a asp.net website with separate web server, Application server and database server. Now I need to have configure load balancing with two web and Application server. I don't have any idea about load balancing. how to proceed with load balancing.
View 1 RepliesI am new to asp.net, I have been tasked to upgrade the physical architecture to load balancing environment to support the application. I done some reading the session state should be configure to Out-Process instead of In-Proc to support load balancing. Is there any other issues I need to take note for asp.net web application to run in the load balanced environment?
View 1 Repliesi have problem accessing HttpContext.Current.Application From global.asax its seems to be null every time i try to access it. How can i to this?
HttpContext.Current.Application.Lock();
HttpContext.Current.Application["Actions"] = "hello";
HttpContext.Current.Application.UnLock();
I've found myself having a requirement to configure log4net based on a file relative to the physical location of the running ASP.NET web application. We like to start the logger as early as possible, so Application_Start seems a proper place. In IIS6, this works fine and has been running for ages, but now we moved to IIS7 and this won't work anymore:
string absolutePath = HttpContext.Current.Request.PhysicalApplicationPath;
because the HttpContext.Current is not available in many global.asax (Application, Session) events. This is old news, we all know it raises the now infamous Request is not available in this context error. We don't want to move back to Classic Mode.
Now, the question is simple: without using HttpContext, is it possible to find the physical location of the currently running web application instance?
Can anyone tell me the differnce between
System.web.httpcontext.current.application["tag"]
or
System.Configuration.Appsettings["tag"]
I have a static class with serveral static methods. In these methods, I'm trying to access the current thread's context using HttpContext.Current. For example:
var userName = HttpContext.Current.User.Identity.Name;
However, when I do that, I receive a NullReferenceException, the infamous "Object reference not set to an instance of an object."
I'm prototyping an environment where multiple applications run on the same server, but they all share a master page. Is it possible to load a master page from another application? In one of my applications, I have this code:
protected override void OnPreInit(EventArgs e)
{
base.OnPreInit(e);
this.MasterPageFile = "~/../MasterPages/Root.master";
}
What this does is set the master page to a file sitting outside my current application. (Note the ".." after the tilde -- so I'm going to the root of my current app, then stepping up a directory to find a master page.)
ASP is displeased with this:
The virtual path '/MasterPages/Root.master' maps to another application, which is not allowed. I understand that it might be stressed out about the fact that there's no backing class for it, but what if I have nothing in the code-behind, and I choose not to inherit my master page from anything -- so the entire thing is contained in the ".master" file?Is there any way to do this?
i'm using an example in which i can fake the session.It's for use in a unittest of a mvc controller.In the test i create a controller and then i do this:
FakeHttpContext httpctx = new FakeHttpContext(null,null,null,null,mSessionItems );
ControllerContext ctx2 = new ControllerContext(httpctx,new RouteData(), target);
here mSessionItems is my session and target is my instance of a controller,and indeed, when i'm in a controller reading this.ControllerContext.HttpContext.Session, i have a session, great!but.... i also read the session outside the controller, and there i use HttpContext.Current.Session, and that is null (or actualy, the HttpContext.Current is null).
I am working on asp.net (newbie) and I am trying to understand what it means to do "load balancing" for the web site. The website will be used by multiple users and resources (database, web service,..).
View 7 RepliesI am making a project for the university. When admission Starts, suddenly a lot of traffic comes at my site around 50000 to 100000 users. Site goes down therefore.
View 1 RepliesI have 4 servers participating in load balancing environment. The same ASP.NET application is being hosted in each server.
I would like to get the DNS Name regardless of the underlying server.
Request.Url.Host
Environment.MachineName
System.Net.Dns.GetHostName()
We are having two load balancing server. In that we have hosted a asp.net 3.5 application right now we are using request userhostaddress to get visitor ip but it is giving load balancer ip instead of real ip.
View 3 RepliesI was discussing load-balancing with a colleague at lunch. I admit that I know very little about this topic. We were discussing the various ways of maintaing session in a ASP.NET application -- none of which suited the high performance load balancing that he was looking for. What about Silverlight? says I. As far as I know it is stateless, you've got the app running in the browser and you've got services on the server that feed/process data. Does Silverlight totally negate the need for Session state management? Is it more friendly to load-balancing? Is it something in between?
View 3 RepliesWe have three web servers in our web farm that are load balanced using the Network Load Balancing Manager in Windows 2003. The sites that run on these boxes use In-Proc ASP.NET session. Our assumption is that the balancing uses a "sticky" session because users seem to be assigned to a given server during their use of the application as well as there doesn't appear to be any session error where the session data is residing on a previous machine. My question is how can I 1) verify that our balancing configuration is using "sticky" sessions and 2) can someone explain the load balancing feature in Windows 2003 relative to ASP.NET web applications?
View 1 RepliesIs there any solutions that "increases power of a single machine" instead of traffic distribution between different hosts. I mean the following schema: "Central server" receives all requests and for its execution it provide "a copy of shared memory" to different hosts.
View 1 Repliesresently we are developing a windows product using dot net, combined withsas (another language). If sas not get installed in local machines then we are in need of using server machine which has sas with it, we are using socket programming to communicate with server machine,Problem is when more number of requests comes to the server for processing sas it is becoming slow, so we need Load balancing If we go with web service which is having same domain name but different ip address mapped using
View 2 RepliesWe are developing an ASP.NET eterprise level application. Customer wants to support for load balancing and fail over. Also customer need that if one server pc fails, end user should not notice that. is this possible? Will there be a timeout for the end user?
View 8 RepliesWe are planning to introduce Load balancing in our server environment. Our site has lots of thumbnails (Thumbimages) to get displayed on the website. As all the images should be there under Web directory to get displayed on web site, do I need to maintain these TNs in all the servers? Is there any other way to accomplish this?
View 1 RepliesMy website/application is in ASP.NET. I use the traditional Session object when people connect so they have their preference, etc. My problem is that sessions were lost very often. I discovered that my hosting company was using load balancing on their servers, so one request on my website can be on one server, and the other on another one.
I tried to store the session data in a SQL Server database, but I quickly discovered that I can't create the needed database on my shared server because I only have one database in my package. Also, there is no guarantee that the rest of the script would have been able to run.
My questions: is there any other way to get around this problem? Should I buy another database only for this? Is there another type of session that I could use? Is there anything else I can use instead of session to keep track of my user when they are connected on my website?
We are using two load balancing server for asp.net site in that we have a functionality which will create a receipt of order in pdf using abcpdf component it was working fine without load balancing server and but when we move it to load balancing server it is giving errors like. A generic error occurred in GDI. I have given full rights to directory which is used but still there problem. Does anybody have a solutions for this.
View 1 RepliesI want to configure ASP.NET Website Project using WCF Service[NetTcp] (both in c#) for web-farm (for website) and NLB Load balancing (for service). I would like to configure following options for same.
NetTcpBinding.maxConcurrentCalls, NetTcpBinding.ListenBacklog and NetTcpBinding.MaxConnections
Note: During single machine configuration when I changed value of NetTcpBinding.ListenBacklog and NetTcpBinding.MaxConnections in WCF Service project to more that 10, which is default value. I got exception. When I changed this value in Website it was working fine. Due to this I had to keep in default configuration. Not sure why this is the case. Following reference gives idea how to configure in given environment but does not tell how to go about it. Ref: [URL] Update: Let me simplify a bit. Lets say I have following configuration.
2 IIS servers in Web Farm.
3 WCF Service Servers (NetTcp) in NLB
Default config. for single instance.
NetTcpBinding.ListenBacklog: 10
NetTcpBinding.MaxConnections: 10
NetTcpBinding.maxConcurrentCalls: 16
Now what will be my configuration setting in this environment. Will it be same as above or will be as follows.
NetTcpBinding.ListenBacklog: 30 (10*3)
NetTcpBinding.MaxConnections: 30 (10*3)
NetTcpBinding.maxConcurrentCalls: 48 (16*3)
I've been assigned a task to get a site ready for migration over to a load balanced architecture. It will have 4 active servers and 2 static, where the active ones will contain the main site, with the static ones containing images, text files etc..My question is, what is the best way to deal with the image paths in this situation?e.g. one one server the image will be something like : 'serverONE/images/image.jpg' but this need the ability to change to 'serverTWO/images/image.jpg'
View 4 Repliesi just have a question about using FileUpload control to upload files to server. Let's say i have 2 servers for a network load balancing, should i need to do something for ensure the data/files is synchronize between that 2 servers?
View 2 Replies