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Wenfeng Wang

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#large language models Open access Oct 2026

PCR: A Prefetch-Enhanced Cache Reuse System for Low-Latency RAG Serving

Retrieval-Augmented Generation (RAG) significantly improves Large Language Models (LLMs) but introduces massive input sequences that severely bottleneck the prefill stage. While KV-cache reuse reduces redundant computation for shared document prefixes, the reusable KV working set in RAG serving can exceed GPU memory ca...

Wenfeng Wang, Xiaofeng Hou, Peng Tang et al. · ACM Transactions on Architec... · 0 citations