Level 4

Flush method for Dispatcher cache clear| Adobe Cloud Manager

Forum|Forum|3 years ago
August 19, 2022
2 replies
1328 views

Hi Team,

We are using Flush option to clear dispatcher cache from pipeline through Adobe Cloud Manager for certain paths and below is observation from log files

[Thu Aug 18 20:54:41 2022] [I] [pid 29225:tid 139940922889984] Activation detected: action=Delete [/etc/designs/site]
[Thu Aug 18 20:54:41 2022] [I] [pid 29225:tid 139940922889984] Touched /mnt/var/www/html/.stat
[Thu Aug 18 20:54:41 2022] [I] [pid 29225:tid 139940922889984] Touched /mnt/var/www/html/etc/.stat
[Thu Aug 18 20:54:41 2022] [I] [pid 29225:tid 139940922889984] Touched /mnt/var/www/html/etc/designs/.stat
[Thu Aug 18 20:54:41 2022] [I] [pid 29225:tid 139940922889984] Evicted /mnt/var/www/html/etc/designs/site/design-abc/favicon.ico.h
[Thu Aug 18 20:54:41 2022] [I] [pid 29225:tid 139940922889984] Evicted /mnt/var/www/html/etc/designs/site/design-abc/favicon.ico
[Thu Aug 18 20:54:41 2022] [I] [pid 29225:tid 139940922889984] Evicted /mnt/var/www/html/etc/designs/site/design-abc
[Thu Aug 18 20:54:41 2022] [I] [pid 29225:tid 139940922889984] Evicted /mnt/var/www/html/etc/designs/site
[Thu Aug 18 20:54:41 2022] [I] [pid 29225:tid 139940922889984] "GET /dispatcher/invalidate.cache" 200 purge [publishfarm/-] 7ms

What we observed, files do not deleted and we could see Evicted message as shown above. Kindly update what does this indicate and is this expected behavior while using Flush option to delete cache from Cloud Manager pipeline.

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Jagadeesh_Prakash

Community Advisor

@nehama I feel in adobe as cloud service we no need to do any flush the cache explicitly.

The Adobe CDN is not flushed when dispatcher is invalidated. The Adobe-managed CDN respects TTLs and thus there is no need for it to be flushed.

Refer to below link. Read section Explicit invalidation of the dispatcher cache

https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/implementing/content-delivery/caching.html

In cloud the replication agent is replaced with distribtuion tree and when a new version of a page or asset from the author, it uses the flush agent to invalidate appropriate paths on its dispatcher.

N

NehaMaAuthor

Level 4

Thanks for reply. We are using AEM on prem with Adobe Managed Services and using Cloud Manager pipeline to deploy and flush cache. Any updates from without cloud perspective

Jagadeesh_Prakash

Community Advisor

@nehama Even if there is any update to cloud prespective this will not impact any of the onprem functionaity. And in On=prem we can still use the replication agent.

And also normally Evicted means files are getting pushed out due to space crunch. Dispatcher clears out the old and unused files replacing with new content in cache.

check the below link if this is useful

https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/dispatcher-evicted-cache-items/m-p/444427/highlight/true#M127234