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docs/getting-started/configuration.md

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+# Configuration Guide
+
+Environment configuration for the Letzshop Import API.
+
+## Environment Variables
+
+Create a `.env` file in your project root:
+
+```env
+# Database Configuration
+DATABASE_URL=sqlite:///./ecommerce.db
+# For PostgreSQL: DATABASE_URL=postgresql://user:password@localhost:5432/ecommerce
+
+# Security
+JWT_SECRET_KEY=your-super-secret-key-change-in-production
+JWT_EXPIRE_HOURS=24
+
+# API Settings
+API_HOST=0.0.0.0
+API_PORT=8000
+DEBUG=True
+
+# Rate Limiting
+RATE_LIMIT_ENABLED=True
+RATE_LIMIT_REQUESTS=100
+RATE_LIMIT_WINDOW=3600
+```
+
+## Configuration Options
+
+| Variable | Description | Default | Required |
+|----------|-------------|---------|----------|
+| `DATABASE_URL` | Database connection string | SQLite | Yes |
+| `JWT_SECRET_KEY` | JWT signing key | - | Yes |
+| `DEBUG` | Enable debug mode | False | No |
+
+## Environment-Specific Setup
+
+### Development
+```env
+DEBUG=True
+DATABASE_URL=sqlite:///./ecommerce.db
+```
+
+### Production
+```env
+DEBUG=False
+DATABASE_URL=postgresql://user:password@host:5432/db
+JWT_SECRET_KEY=production-secret-key
+```
+
+*This guide is under development. See [Installation](installation.md) for complete setup instructions.*