Granular Cache Invalidation with Surrogate Keys
Rather than purging the entire global CDN cache, surrogate keys allow applications to purge only URLs associated with a specific modified product ID.
eCommerce & Scale
7 min read
Aug 25, 2026
Global CDN Purging & Cache Tag Invalidation Strategies for Dynamic Stores
Z
Published by ZodHost Engineering Team
Executive Summary & Key Takeaways
Implement surrogate key cache tags to instantly purge updated product prices and inventory across global CDN edges in milliseconds.
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