The Importance of Understanding and Fixing Cache Clear Requests in AEM as a Cloud Service
Recently, Samuel Fawaz shared his thoughts on LinkedIn about the new self-service feature for getting API keys for CDN purges in AEM as a Cloud Service. This new feature has been long overdue and brings much-needed convenience to users.
“Sometimes the CDN cache is just messed up and you want to clean out everything. Now you can.”
While the self-service option for clearing caches is a step in the right direction, it raises the question of why explicit cache flushes are necessary in the first place.
The caching rules for AEM as a Cloud Service CDN and dispatcher are based on time-to-live (TTL) information, making them straightforward. However, the frequent need for cache flushes indicates a lack of understanding of caching rules and content update visibility.
It is essential to treat cache clear requests as bugs and not just temporary solutions. By analyzing the root cause of cache issues and adjusting caching rules accordingly, you can prevent future occurrences and ensure smoother content delivery.
Flushing caches comes with the cost of increased latency for end users, highlighting the importance of fixing underlying issues to minimize disruptions.
Key Takeaways:
- An explicitly requested cache clear is a symptom of an underlying issue and should be treated as a bug.
- Understanding and fixing caching problems eliminates the need for manual cache flushes in the future.
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