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Application context performance? Messages   Related Types This message was discovered on microsoft.public.dotnet.framework.aspnet. Responses highlighted in red are from those people who are likely to be able to contribute good, authoratitive information to this discussion. They include Microsoft employees, MVP's and others who IMHO contribute well to these kinds of discussions. Post a new message to this list... Stephane (VIP) Hi, I was wondering if it's a good thing to use the web server application context to manage a entire web site. Here's my situation: I built a server using .Net remoting. This is running as a windows service. Then, my web application connect to this server via web services. The server is not much than ArrayList of ArrayLists. For example, I got an ArrayList of customers and each of those customers have an ArrayList of visitors, themselves having an ArrayList of web pages visited... Would the performance be equal if I had used application context? I would have to use application.lock and application.unlock many times because thoses lists might be accessed concurrently. What if I create a new object in the application context for each customer? Could the web server support as many as 100 customers? What are the application context performances and limits? If I could to this with application context, it would be less trouble than using .Net remoting but I'm not sure the performance would be improved... Thanks for your help. Stephane Reply to this message...        Carl Prothman [MVP] (VIP) Stephane wrote: [Original message clipped] Stephane, HttpApplication.Context property gets HTTP-specific information about the current request. Hence the context variable only exists for the life of the request, which very short. I think you are better off saving each customer's information in thier own Session variable. http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemWebHttpApplicationClassSessionTopic.asp Plus you should call the Web Service asynchronousy. http://msdn.microsoft.com/library/en-us/dnservice/html/service09032002.asp -- Thanks, Carl Prothman Microsoft ASP.NET MVP Hire top-notch developers at http://www.able-consulting.com Reply to this message...        Stephane (VIP) Thanks, Maybe I wasn't clear enough (english is my second language!) What I meant is instead of using a .Net remoting service, is it possible to store an ArrayList in the application object in my ASP.NET web page like this: Application["someCustomer"] = new ArrayList(); and this for as many customers as I need. What kind of performance could I expect since I'd have to use many locks and unlocks? Thanks, Stephane "Carl Prothman [MVP]" wrote: [Original message clipped] Reply to this message...        Carl Prothman [MVP] (VIP) Stephane wrote: [Original message clipped] No worries... ;-) [Original message clipped] Make the ArrayList customer specific and store it in Session Session["CustomerArray"] = new ArrayList(); Remember to check to see if the Session variable is not null before pulling the value out (since Session can timeout, and hence the variables go away). Application variables are for the life of the application and should be filled apon application start up. You will have poor performance if you try to have all users update a single Application variable. -- Thanks, Carl Prothman Microsoft ASP.NET MVP Hire top-notch developers at http://www.able-consulting.com Reply to this message...     System.Collections.ArrayList System.Web.HttpApplication Ad MBR BootFX Best-of-breed application framework for .NET projects, developed by Matthew Baxter-Reynolds and MBR IT

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