Lightning talk · 2026

Scaling Production RAG Systems with Kubernetes

How retrieval-augmented generation earns its uptime: autoscaling vLLM, vector search, and observability on Kubernetes so a RAG system stays fast and affordable when traffic stops being a benchmark and starts being real.

Event
KCD New York 2026
Date
June 10, 2026
Where
Kubernetes Community Days · New York City
Speaker
Samir Sengupta

How retrieval-augmented generation earns its uptime: autoscaling vLLM, vector search, and observability on Kubernetes so a RAG system stays fast and affordable when traffic stops being a benchmark and starts being real.

What the talk covers

  • vLLM served behind FastAPI on Kubernetes, using continuous batching and KV-cache reuse so GPU time is not wasted on padding.
  • Horizontal autoscaling driven by real serving signals — queue depth and latency — rather than CPU utilisation, which tells you almost nothing about an inference workload.
  • Vector search and reranking deployed as their own scalable units, so retrieval and generation can be sized independently.
  • Tracing and evaluation wired in from the start, so a quality regression surfaces as an alert rather than a support ticket.

Why it matters

A RAG demo is easy. A RAG system that stays fast and affordable when traffic stops being a benchmark and starts being real is an infrastructure problem, and it is where most teams stall.

The other talk

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