agg_router_kv_approx.yaml

# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0

## This example demonstrates KV-aware routing with the --no-kv-events flag.
## Instead of receiving KV events from workers, the router predicts cache state
## locally based on routing decisions with TTL-based expiration and pruning.
## Note: This mode does not require NATS or JetStream during dynamo platform deployment.
apiVersion: nvidia.com/v1alpha1
kind: DynamoGraphDeployment
metadata:
  name: vllm-agg-router-kv-approx
spec:
  services:
    Frontend:
      dynamoNamespace: vllm-agg-router-kv-approx
      componentType: frontend
      replicas: 1
      extraPodSpec:
        mainContainer:
          image: nvcr.io/nvidia/ai-dynamo/vllm-runtime:my-tag
          command:
            - python3
          args:
            - -m
            - dynamo.frontend
            - --router-mode
            - kv
            - --no-kv-events
      envs:
        - name: DYN_ROUTER_MODE
          value: kv
    VllmDecodeWorker:
      envFromSecret: hf-token-secret
      dynamoNamespace: vllm-agg-router-kv-approx
      componentType: worker
      replicas: 2
      resources:
        limits:
          gpu: "1"
      extraPodSpec:
        mainContainer:
          image: nvcr.io/nvidia/ai-dynamo/vllm-runtime:my-tag
          workingDir: /workspace/examples/backends/vllm
          command:
          - python3
          - -m
          - dynamo.vllm
          args:
            - --model
            - Qwen/Qwen3-0.6B
            - --kv-events-config
            - '{"enable_kv_cache_events": false}'