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Fragment Caching Strategy
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This message was discovered on ASPFriends.com 'aspngcache' list.


SRoche@uk.imshealth.com
Hi,

In a common Content Management solution, content is created in a back-end
application
and cached in the front end. Meanwhile, if the content is changed in the
back-end, the user
is able to selectively flush this content (ie. remove it from the cache) in
order for the
new version to be displayed. (That's how we do it in Vignette !)

After looking at the fragment caching in .NET, I can't see an obvious way to
achieve this. Basically
I want a page in the back end that lists the cached user controls in the
front end that I want to flush.
The problem is, however, that I have no control over the key used for my
user control in the cache, even
more so when it is varied by a parameter and there is more than one.

What is the recommended approach in this case ? Do I have to use object
dependencies in the
cache where I create a reference to the control with a key that I specify ?
Its all very well putting
things in the cache, but if you don't know how to reference them you can't
selectively flush them !

Any comments/suggestions much appreciated.

Steve...
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=?iso-8859-1?Q?Jo=E3o?= Pedro Martins

[Original message clipped]

Here's the way I'm doing it:

I'm using a system of FileDependency's (HttpResponse.AddFileDependency).
The backoffice application updates the date (in unix we'd call it "touch")
of a file that represents the information (for example:
_cachedependencies/articles/id1234).
the ASPX/usercontrols automatically updates when this is changed.

j
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System.Web.HttpResponse




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