1# Sections
2 
3This file defines all sections, their ordering, impact levels, and descriptions.
4The section ID (in parentheses) is the filename prefix used to group rules.
5 
6---
7 
8## 1. Eliminating Waterfalls (async)
9 
10**Impact:** CRITICAL  
11**Description:** Waterfalls are the #1 performance killer. Each sequential await adds full network latency. Eliminating them yields the largest gains.
12 
13## 2. Bundle Size Optimization (bundle)
14 
15**Impact:** CRITICAL  
16**Description:** Reducing initial bundle size improves Time to Interactive and Largest Contentful Paint.
17 
18## 3. Server-Side Performance (server)
19 
20**Impact:** HIGH  
21**Description:** Optimizing server-side rendering and data fetching eliminates server-side waterfalls and reduces response times.
22 
23## 4. Client-Side Data Fetching (client)
24 
25**Impact:** MEDIUM-HIGH  
26**Description:** Automatic deduplication and efficient data fetching patterns reduce redundant network requests.
27 
28## 5. Re-render Optimization (rerender)
29 
30**Impact:** MEDIUM  
31**Description:** Reducing unnecessary re-renders minimizes wasted computation and improves UI responsiveness.
32 
33## 6. Rendering Performance (rendering)
34 
35**Impact:** MEDIUM  
36**Description:** Optimizing the rendering process reduces the work the browser needs to do.
37 
38## 7. JavaScript Performance (js)
39 
40**Impact:** LOW-MEDIUM  
41**Description:** Micro-optimizations for hot paths can add up to meaningful improvements.
42 
43## 8. Advanced Patterns (advanced)
44 
45**Impact:** LOW  
46**Description:** Advanced patterns for specific cases that require careful implementation.
47