Are the reported vLLM speedups guaranteed in production?
No. AWS reports benchmark results on specific one-prefill/one-decode EC2 P5en deployments with EFA. Hardware, model, context length, request rate, routing and cache behavior can change the result.
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Why LLM Serving Teams Are Turning KV Cache Transfer Into a First-Class Design ChoiceTwo new vLLM transfer techniques target first-token latency by overlapping movement and reusing multi-turn context. See where each helps and what it costs.
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