sglang

Serve LLMs with RadixAttention prefix caching and structured JSON outputs.

11.5k|842|Updated Nov 3, 2025
One-click install
npx skills add https://github.com/Orchestra-Research/AI-Research-SKILLs --skill sglang-orchestra-research
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: sglang
Source: https://github.com/Orchestra-Research/AI-Research-SKILLs/tree/main/12-inference-serving/sglang
Command: npx skills add https://github.com/Orchestra-Research/AI-Research-SKILLs --skill sglang-orchestra-research

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires sglang, torch, transformers, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill addresses the need for high-performance, low-latency serving of Large Language Models (LLMs), particularly for complex agentic workflows and structured output generation, by optimizing inference speed and resource utilization.

Core Features & Use Cases

  • Optimized Inference: Achieves significantly faster inference speeds (up to 5-10x) compared to standard serving frameworks through RadixAttention prefix caching.
  • Structured Output Generation: Enables reliable generation of JSON, regex-constrained, or grammar-based outputs, crucial for agent tool use and data parsing.
  • Agentic Workflows: Ideal for building AI agents that involve repeated system prompts, tool calls, or multi-turn conversations, where prefix caching dramatically reduces latency.
  • Use Case: Deploying an AI assistant that needs to process user requests, call external tools (like booking flights or checking weather), and return structured JSON responses, all while maintaining high throughput and low latency.

Quick Start

Launch the SGLang server with the Llama 3-8B model on port 30000.

Frequently Asked Questions about sglang

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I speed up LLM serving for multi-turn agent workflows?

You can speed up LLM serving for multi-turn agent workflows by using RadixAttention to automatically cache and reuse prefix KV caches, reducing latency for repeated system prompts and tool calls.

What is the best way to enforce structured JSON generation during LLM inference?

The best way to enforce structured JSON generation during LLM inference is to use a serving framework that supports regex-constrained and grammar-based outputs, ensuring reliable data parsing for agent tool use.

How does RadixAttention prefix caching improve LLM inference performance?

RadixAttention improves LLM inference performance by automatically caching prefix KV trees, enabling up to 5-10x faster inference speeds compared to standard serving frameworks through efficient KV cache reuse.

Can I deploy SGLang with PyTorch and Hugging Face transformers?

Yes, you can deploy SGLang with PyTorch and Hugging Face transformers, as the serving environment requires the torch and transformers libraries to operate and execute high-performance LLM inference.

Why is my LLM serving latency so high for repeated system prompts?

High LLM serving latency for repeated system prompts occurs when the framework lacks automatic prefix caching, a problem solved by utilizing RadixAttention to optimize KV cache reuse across multi-turn conversations.

Does SGLang support high-throughput inference for Llama models?

Yes, SGLang supports high-throughput inference for Llama models by launching optimized serving servers that leverage RadixAttention to maximize hardware utilization and minimize response times.