LMCache Speeds Up LLMs with KV Caching
kalyan_kpl · x · 2026-07-19
LMCache is an extension for LLM serving designed to reduce Time To First Token (TTFT) and boost throughput, making it particularly suited for long-context scenarios.
It works by storing the KV cache of reusable text across multiple locations, including GPU, CPU DRAM, and local disk. When identical text reappears, the cache is reused directly, minimizing GPU computation and user wait times. According to the author, integrating this with vLLM can yield approximately 3–10x savings in latency and compute power for use cases like multi-turn QA and RAG.
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