How to use: HttpResponse.RemoveOutputCacheItem when using varyByCustom

[jovana]

LS,

I have implemented the Redis OutputCache using the Azure Redis service.

On top of the pages need to cache:
<%@ OutputCache VaryByParam="*" Duration="600" %>

After access a random page and I check the key in Redis database is has saved like:
/_a2/monitor.aspxHQNactionVtestFCDE

So running the below line of code, will remove this cache item (and it worked).
HttpResponse.RemoveOutputCacheItem("/monitor.aspx?action=test", "RedisOutputCache")

Now I have updated the same page adding the varyByCustom the the OutputCache directive:
<%@ OutputCache VaryByParam="*" varyByCustom="userhash" Duration="600" %>

Now accessing the page and checking the key in Redis database it is saved like:
/_a2/monitor.aspxHQNactionVtestFCNuserhashVcc6ef5b7173286704cef942d5577b88bd81f2cce71a0dcdc8676d3a815e68b59DE

You see the added userhash hash value, this is nice and worked as axpected.
But now here comes the problem: How do I clear this cache item.

This is not working:
HttpResponse.RemoveOutputCacheItem("/monitor.aspx?action=test", "RedisOutputCache")

Also tried:
HttpResponse.RemoveOutputCacheItem("/monitor.aspx?action=test&userhash=cc6ef5b7173286704cef942d5577b88bd81f2cce71a0dcdc8676d3a815e68b59", "RedisOutputCache")

And also tried:
HttpResponse.RemoveOutputCacheItem("/monitor.aspx?action=test {userhash:cc6ef5b7173286704cef942d5577b88bd81f2cce71a0dcdc8676d3a815e68b59}", "RedisOutputCache")

Is there an way to remove this cache item on using the varyByCustom option?

Any help is most welcome!

Joël

[SiddharthChatrolaMs]

This is more of asp.net question. Output cache provider it self is very simple. it put/get/deletes key that asp.net request it to. Why asp.net is not sending remove request is the question?

[mapalan]

@jovana is this still something you are having an issue with?