Clear output cache in MVC 6 / ASP.NET 5

Question

I have html fragments in a partial view that uses the output cache like so

 <cache vary-by="@Util.SomeID" expires-after="@TimeSpan.FromHours(1)">
     <div>some content</div>
 </cache>

In the event that I need the content to be updated before the expiration of the cache, how do I go about busting the cache for that particular fragment (or the entire cache, if necessary) ?

I'm using ASP.NET 5 and MVC 6..

Thanks!

Possible duplicate of Any way to clear/flush/remove OutputCache? — timothyclifford
– timothyclifford, Commented Feb 18, 2016 at 18:09

Bhargav Rao · Accepted Answer · 2018-03-27 08:38:39Z

1

The IMemoryCache interface doesn't have a method to clear the cache. Otherwise you could inject IMemoryCache to your controller or where ever you need it and call the method.

I suggest to post a feature request on the aspnet caching repository or use a different cache mechanism.

I'm working on extending CacheManager to be usable in MVC Core as memory or distributed cache which then will have a lot more functionality than the build in, pretty simple, memory cache...

edited Mar 27, 2018 at 8:38

Bhargav Rao

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answered Feb 19, 2016 at 15:36

MichaC

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Simon Ordo · Accepted Answer · 2016-02-22 18:24:08Z

0

The ASP.NET team has confirmed that it's not possible to directly clear cache items today. The workaround suggested is to use a "version" variable as part of the vary-by cache parameter.

That will not actually clear out the existing value, but the new value will be rendered. The old value will eventually be cleaned up as it expires.

More details at https://github.com/aspnet/Mvc/issues/4117#issuecomment-187298466

answered Feb 22, 2016 at 18:24

Simon Ordo

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