Unverified50% confidenceFactExact time
Dynamically adding or removing tool definitions in each request will cause the prefix hash to change, invalidating the cache.
1
Sources
50%
Confidence
Long-term
Relevance
9/25/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedStale embeddings silently winning retrieval means that if old-version vectors are not cleaned up or down-weighted in time, they may be preferentially recalled due to greater semantic similarity, returning outdated answers without raising errors.64% similarUnverifiedIn multi-turn conversations, elliptical queries with anaphora perform poorly when used directly for vector retrieval, so query rewriting using an LLM to rewrite them into self-contained queries is a common approach63% similarUnverifiedOnce any minor change appears in the first half of a prompt — such as a dynamic timestamp, a user's name, or a real-time retrieval result — the entire cache prefix is invalidated.62% similarUnverifiedWhen exploration goes down a wrong branch, the Rewind command should be used to truncate the trailing invalid turns in order to preserve the prefix cache, rather than using the Compact command, which rewrites history and destroys the cache.62% similarUnverifiedPrompt 缓存依赖于前缀的精确匹配，一旦技能定义的顺序或内容发生微小变化，缓存即失效61% similar
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