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PrefixPrompt -> SharedKVCacheReference
Share context key-value caches across independent model replicas running on a cluster to eliminate redundant prefix computation.
Problem it solves
Multiple concurrent requests with identical system prompts or multi-turn history waste memory and compute when processed by separate replicas.
Consumes
Emits
The real projects this mechanism was found in. Attribution is the point — this is how the best teams actually do it.