express

DocuRAG.js Express Example

This is an example implementation showing how to use DocuRAG.js with Express and Server-Sent Events (SSE).

Features

• PDF file upload and processing
• Real-time chat with streaming responses
• Beautiful UI with drag & drop
• PDF preview
• Source citations

Prerequisites

• Node.js 18+
• Docker (for Qdrant)
• Ollama with Llama2

Quick Start

1. Start the required services:

# Start Qdrant
docker run -p 6333:6333 qdrant/qdrant

# Start Ollama with Llama2
ollama run llama2

2. Install dependencies:

cd examples/express
npm install

3. Run the server:

npm start

4. Open your browser:

http://localhost:3000

API Endpoints

• POST /upload - Upload and process a PDF file
• POST /chat - Chat with the processed document (SSE)
• POST /cleanup - Clean up resources

UI Features

• Drag and drop PDF upload
• Real-time chat interface
• PDF preview panel
• Source citation display
• Error handling and loading states

Security Features

• File type validation (PDF only)
• File size limits (10MB)
• CORS enabled
• Sanitized error responses