Unverified50% confidenceFactExact time
KV Cache matching requires strict prefix consistency — only when the beginning of a request exactly matches a cached record can the subsequent new content continue from the cache.
1
Sources
50%
Confidence
Long-term
Relevance
9/22/2026
First Seen
Sources
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Related Claims
VerifiedThe KV Cache mechanism can cache repeated prefix content, and the more concise the system prompt, the higher the cache hit rate.80% similarUnverifiedWhen KV cache is reused, cached intermediate activations may produce different logit outputs for the same input when the batch size or sequence concatenation method changes.71% similarUnverifiedKV Cache is a core optimization technique during the inference phase of large language models, essentially a space-for-time strategy that avoids redundant computation by caching the Key and Value vectors of historical tokens.67% similarUnverifiedKV Cache avoids redundant computation during autoregressive inference by caching the K and V values of historical tokens, so that new tokens only need to compute their own Q.65% similarUnverifiedDecode 阶段属于访存密集型操作，每生成一个新 token 需从显存读取全部历史 token 的 KV Cache64% similar
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