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FlatCake: Why Tiered KV Cache Storage Is Holding LLM Serving Back

FlatCake: Why Tiered KV Cache Storage Is Holding LLM Serving Back When you send a long prompt to an LLM API, the service has to store the key-value (KV) cache for your session somewhere. For short conversations, GPU HBM handles it fine. But as context windows stretch to hundreds of thousands of tok…

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  1. 2026-11-02 17:06 · DEV Community — Machine Learning
    FlatCake: Why Tiered KV Cache Storage Is Holding LLM Serving Back

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