Term Kind Topic What it is
Read Local Write Global pattern Edge Data Consistency Replicating read-only state to every edge location while directing writes to a single authoritative region, which is the arrangement most edge data stores actually provide.
Variant-Aware Purge Tag-Based Invalidation, Vary-Safe Purge pattern Edge Data Consistency Invalidating every cached representation of a resource rather than one URL - because content negotiation and query parameters create many objects under one address, and a URL purge clears only one of them.