Rules of AEM

  Cache Invalidation in Hybrid AEM: Keeping EDS and AMS in Sync on AWS CloudFront Introduction In a hybrid AEM setup where EDS and AMS serve different parts of the same website through AWS CloudFront, cache invalidation is one of the trickiest problems to solve. Both systems have completely different invalidation mechanisms — and if you don't coordinate them properly, editors end up seeing stale content, confused about why their published changes aren't showing up. This post explains how cache invalidation works in each system, why hybrid setups make it harder, and how to build a reliable invalidation strategy across both origins. The Core Problem In a single-origin AEM setup, invalidation is straightforward: Editor publishes in AEM Dispatcher flush agent clears the Dispatcher cache CloudFront invalidation clears the CDN layer Done In a hybrid setup you have two completely separate invalidation pipelines that must never interfere with each other: EDS publish event ...