Show HN: MemStitch – Zero-copy context bridging for vLLM (25x TTFT speedup)

MemStitch is a zero-copy context bridging system for vLLM that eliminates redundant GPU processing when multiple agents sequentially process the same long text contexts. By using cryptographic hashing and direct memory mapping, it achieves a 25x speedup in time-to-first-token latency and reduces GPU memory usage by 43.4% compared to standard vLLM inference. The system includes security controls to prevent unauthorized cache access between agent sessions.