vLLM push-based NIXL connector cuts TTFT in disaggregated inference
Shifting KV-cache transfer coordination off the critical path removes a hidden latency tax in prefill-decode disaggregation, and the 3x TTFT gain applies to any team serving LLMs at scale on vLLM. Practitioners running inference on AWS can adopt the NIXL connector on EC2 P5en with EFA networking directly from the guide. Compared with pull-based transfer, the push design needs no receiver-side polling, which is what unlocks the latency savings.