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vLLM 0.31.0 adds fast‑restart weight cache for GPU serving

The open‑source LLM serving library vLLM 0.31.0 introduces a preload CLI that keeps post‑quantized weights resident in GPU memory across engine restarts.

NoteBy Published by Oossa: 1 min read

The vLLM project released version 0.31.0 on October 5, 2026. The highlight is a new preload command that starts a weight‑cache daemon, letting post‑quantized model weights stay in GPU memory when the server restarts. The feature works with data parallelism and adds a health‑check endpoint. The release also bundles 717 commits from 307 contributors.

Why it matters

Developers can update or restart LLM services without re‑loading large models, cutting downtime for applications that rely on vLLM.

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