Sections

Sections

This file defines all sections, their ordering, impact levels, and descriptions. The section ID (in parentheses) is the filename prefix used to group rules.

1. Eliminating Waterfalls (async)

Impact: CRITICAL
Description: Waterfalls are the #1 performance killer. Each sequential await adds full network latency. Eliminating them yields the largest gains.

2. Bundle Size Optimization (bundle)

Impact: CRITICAL
Description: Reducing initial bundle size improves Time to Interactive and Largest Contentful Paint.

3. Server-Side Performance (server)

Impact: HIGH
Description: Optimizing server-side rendering and data fetching eliminates server-side waterfalls and reduces response times.

4. Client-Side Data Fetching (client)

Impact: MEDIUM-HIGH
Description: Automatic deduplication and efficient data fetching patterns reduce redundant network requests.

5. Re-render Optimization (rerender)

Impact: MEDIUM
Description: Reducing unnecessary re-renders minimizes wasted computation and improves UI responsiveness.

6. Rendering Performance (rendering)

Impact: MEDIUM
Description: Optimizing the rendering process reduces the work the browser needs to do.

7. JavaScript Performance (js)

Impact: LOW-MEDIUM
Description: Micro-optimizations for hot paths can add up to meaningful improvements.

8. Advanced Patterns (advanced)

Impact: LOW
Description: Advanced patterns for specific cases that require careful implementation.