Clear cache programmatically

I have a usecase where modifications are made to a CI and published. We need to expire the cache on both management and live stage. I am using ContentUtil to do that. I recursivly clear the entire page cache for the CI. The problem is that the cache expires on the management stage but not live. I do see that the request was received to clear cache but, iI still see the old content. Also, the cache expire request is only being received for the CI and not the other components/regions.

Anyone else has done this before and knows whats going on?

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Jesse_Estum

I think that if you traverse the referringcontent tree up to the Component that renders the CI, you should be ableto just clear the cache for that Component. This assumes you areusing [something similar] to the default caching scheme.

From:   "eLink Entry:Vignette V7 and V8 Web Content Management" <v7webcontentmanagement@elinkkc.opentext.com>
To:   "eLink Recipient"<devnull@elinkkc.opentext.com>
Date:   02/08/2011 11:25 AM
Subject:    Clear cacheprogrammatically

Clearcache programmatically

Posted by a.girard@ratchet.com(Girard, Alex) On 2011/02/08 11:30

I have a usecase where modifications are made toa CI and published. We need to expire the cache on both management andlive stage. I am using ContentUtil to do that. I recursivly clear the entirepage cache for the CI. The problem is that the cache expires on the managementstage but not live. I do see that the request was received to clear cachebut, iI still see the old content. Also, the cache expire request is onlybeing received for the CI and not the other components/regions.

Anyone else has done this before and knows whats goingon?

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Forum:	VignetteV7 and V8 Web Content Management
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Alex_Girard

That's what I did. Like I said, it clears mgmt stage cache but, not live.

Chao_Wang

you need to call SysUtil.performDeliveryServerAction("expireFromCache", vcmid).

there is an overloaded method accepting string array, but that doesn't work all the time for us.

Alex_Girard

Thanks Let me try that.

Alex_Girard

Still doesn't clear cache on the live instance

William_Prentice

Alex,

You have to call the clear cache method from the context of the delivery app server. How are you getting this request over to the delivery app server to be executed?

Thanks,

Bill

William_Prentice

Alex,

We also handle all of this through our listeners that are installed in the mgmt and delivery stages where DPM/DSM has been configured. Our DPM/DSM listener will clear the mgmt cache when the object is updated on the mgmt stage and will clear the cache for the delivery stage when the object is published to that stage.

Thanks,

Bill

Traolly_Xiong

Hello Bill,

Do you mind telling me what is the listener name you are talking about?

Thanks.

Regards,
TRX

William_Prentice

The listener name is:

com.vignette.ext.templating.cache.DeploymentEventListener

Which should be on the all three deployment events for the stage. The listener should be added to all applicable events when you configure DPM/DSM for the stage.

Thanks,

Bill

Alex_Girard

Looks like you are using the default listeners. Did you have to do any customizations?

Vikaas_Neekhra

I am also trying to create the custom Deployment event listener which clears the cache when we update and published any content. I passed the vcmid of the CI in the below method, but it didnt clear the cache on delivery stages and still showing old contents.

SysUtil.performDeliveryServerAction("expireFromCache", vcmid);

Has anyone achieved this?

Appreciating any thought or suggestion on this...

Thanks!

Qutubuddin

Which version of product you are using currently?

You should not need to do this, if cache for content item is not clearing for you, you may have some other configuration issue in your environment. In case you are talking about clearing the cache for HTML Fragments then it can typically be done from preview tools menu for the site on per page/template basis.

I am talking about WEM 8.0 & 8.1

Thanks & Regards

Qutubuddin Saifuddin
Senior Consultant I America Services Organization

Phone: (732) 354 4423
Mobile: (732) 397 7951

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From: eLink Entry: Discussion Group - Web Experience Management [mailto:v7webcontentmanagement@elinkkc.opentext.com]
Sent: Tuesday, February 05, 2013 11:11 AM
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Subject: Re Clear cache programmatically

Re Clear cache programmatically

Posted byvikas.neekhra@xcelenergy.com (Neekhra, Vikas) On 02-05-2013 11:07

I am also trying to create the custom Deployment event listener which clears the cache when we update and published any content. I passed thevcmid of the CI in the below method, but it didnt clear the cache on delivery stages and still showing old contents.

SysUtil.performDeliveryServerAction("expireFromCache", vcmid);

Has anyone achieved this?

Appreciating any thought or suggestion on this...

Thanks!

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Topic:	Clear cache programmatically
Forum:	Discussion Group - Web Experience Management
Content Server:	Knowledge Center