HttpContext.Current / Cache Available To All Sessions

May 4, 2010

As per title. I want to be able to save some data in a cache object but this object must be available to all users/sessions and can expire.What is the best method to achieve this in a asp.net web app?

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C# - Application_End() Cannot Access Cache Through HttpContext.Current.Cache

Dec 12, 2010

I want to be able to maintain certain objects between application restarts.

To do that, I want to write specific cached items out to disk in Global.asax Application_End() function and re-load them back on Application_Start().

I currently have a cache helper class, which uses the following method to return the cached value:

return HttpContext.Current.Cache[key];

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C# - Caching Through HttpContext.Current.Cache Or Just A Static?

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Any Nasty Side Affects If I Lock The HttpContext.Current.Cache.Insert Method?

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Apart from blocking other threads reading from the cache what other problems should I be thinking about when locking the cache insert method for a public facing website.

The actual data retrieval and insert into the cache should take no more than 1 second, which we can live with. More importantly i don't want multiple thread potentially all hitting the Insert method at the same time.

The sample code looks something like:

public static readonly object _syncRoot = new object();

if (HttpContext.Current.Cache["key"] == null)
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HttpContext.Current.Session Is Null

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How To Use Server.MapPath When HTTPContext .Current Is Nothing

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Why Does HttpContext.Current Need To Used Within A Class, But Not A Method

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For instance if I'm inside the Page_Load method and I want to get query string data I just do this:

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HttpContext.Current.User.Identity.Name With And Without Www?

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My webservice is ran when I debug my application :S.

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Get The Host Domain Name Without Using HttpContext.Current.Request?

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I've got an ASP .Net application running on IIS7. I'm using the current url that the site is running under to set some static properties on a class in my application. To do this, I'm getting the domain name using this (insde the class's static constructor):

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And it works fine on my dev machine (windows XP / Cassini). However, when I deploy to IIS7, I get an exception: "Request is not available in this context".

I'm guessing this is because I'm using this code in the static constructor of an object, which is getting executed in IIS before any requests come in; and Cassini doesn't trigger the static constructor until a request happens. Now, I didn't originally like the idea of pulling the domain name from the Request for this very reason, but it was the only place I found it =)

So, does anyone know of another place that I can get the host domain name? I'm assuming that ASP .Net has got to be aware of it at some level independent of HttpRequests, I just don't know how to access it.

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