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Why Split Prefill and Decode GPUs Lose Time in the Hand-Off, Not the Network

This story is from 2026-10-23. It is preserved in the archive; the latest stories are on the live feed.

Engineer's view. This is a Node.js server doing a synchronous parse on every upload. Each parse is quick, but it blocks the one loop every connection shares, so every response slows. With a fixed connection pool, slower responses then mean waiting for a free connection. The decode server's hand-off…

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  1. 2026-10-23 12:01 · DEV Community — AI
    Why Split Prefill and Decode GPUs Lose Time in the Hand-Off, Not the Network

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