Definition
Plain language
A system that speeds up AI services by reusing saved notes for any repeated chunk of text, no matter where it appears.
As stated in the literature
A serving optimization implementing position-independent KV-cache reuse across requests, commercialized as LMCache; reuses cached key/value tensors for matching text chunks regardless of preceding context.
Why it matters: It cuts the repeated work of processing identical text, making AI services faster and cheaper to run at scale.
For example, if a thousand users all paste the same company policy into their questions, the system can reuse one set of saved notes for that policy instead of re-reading it a thousand times.
Heard on the show
“And this is shipping: there's a system called CacheBlend, commercialized as LMCache, plus a whole family of follow-ups.”Episode 226 — How a Speed Feature Lets a Stranger Poison Your AI's Answer