AEM 6.5 | Custom Cache Invalidation Strategy for Headless Content

Question

We have several websites running on AEM 6.5 (On-Premise), including both traditional template-based and headless implementations. For the headless sites, we've implemented a custom caching layer to cache persistent query results as per specific business requirements. We also have Dispatcher and CDN level caching which also caches persistent query result.

What’s the recommended approach to invalidate or clear this custom cache when Content Fragments are published?

arunpatidar · Accepted Answer

Yes, cache stored in the cloud database used to optimize the content retrieval. Now we are looking for recommended way to invalidate this cache.

Hi @mukesh_kumar_co

You need to implement event based cache invalidation, you can leverage Adobe IO to listen publish events from AEM and using Adobe IO runtime you can write some script to invalidate cache at cloud database.

arunpatidar · Answer

Hi @mukesh_kumar_co

I am not sure if you can detect which persistent query are caching a particular Content Fragment.

You can leverage the statefile and invalidate all the dispatcher cache for persistent query with each publish/unpublish.

The CDN cache can be flushed by listening publish/unpublish event and make API calls to explicit CDN cache invalidation.

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