Production-Grade LLM Inference Service Stack: A Unified Deployment Solution Based on Triton, vLLM, and Ray Serve

This article introduces an open-source production-grade LLM service infrastructure that integrates three major inference engines—Triton Inference Server, vLLM, and Ray Serve. It provides an OpenAI-compatible API, supports Kubernetes auto-scaling based on DCGM GPU metrics, and offers a portable deployment solution using BentoML.

• Original Author/Maintainer: TylrDn
• Source Platform: GitHub
• Original Title: model-serving-stack
• Original Link: https://github.com/TylrDn/model-serving-stack
• Publication Date: June 12, 2026

As large language models (LLMs) are rapidly adopted in various business scenarios, how to deploy models efficiently and stably in production environments has become a core challenge for engineering teams. Traditional model serving solutions often face the following issues:

• Performance Bottlenecks: Limited inference throughput on a single machine, making it difficult to handle high-concurrency requests
• Low Resource Utilization: GPU memory and computing resources cannot be dynamically allocated, leading to waste
• Complex Operations: Lack of unified monitoring, scaling, and fault recovery mechanisms
• Deployment Fragmentation: Different inference engines (e.g., vLLM, Triton, Ray) operate independently, lacking a unified interface

To address these issues, the open-source community has emerged with a number of model serving infrastructure projects for production environments. The model-serving-stack introduced in this article is one of the representative solutions.

model-serving-stack is a comprehensive production-grade LLM service infrastructure project. Its core design concept is to integrate three mainstream inference engines into a unified technology stack:

Developed by NVIDIA, Triton is a widely adopted model inference server in the industry, supporting backends for multiple frameworks (TensorRT, PyTorch, ONNX, etc.). In this project, Triton handles latency-sensitive inference tasks that require high optimization, especially suitable for production scenarios needing TensorRT acceleration.

vLLM is a high-throughput LLM inference engine developed by the University of California, Berkeley. Its core innovations include PagedAttention memory management and continuous batching technology. In this architecture, vLLM handles high-throughput and high-concurrency inference loads, significantly improving GPU utilization.

Ray Serve is a model serving component of the distributed computing framework Ray, specializing in handling complex business logic orchestration and multi-model combination scenarios. In this project, Ray Serve acts as a flexible business orchestration layer, supporting advanced features such as multi-model pipelines and A/B testing.

The project provides endpoints compatible with the OpenAI API format, meaning developers can directly call deployed models using familiar SDKs (such as the OpenAI Python client) without modifying existing code. This compatibility greatly reduces migration costs, allowing enterprises to seamlessly access self-hosted LLM services.