---
title: "Sections"
description: "This file defines all sections, their ordering, impact levels, and descriptions. The section ID (in parentheses) is the filename prefix used to group rules."
type: skill
canonical_url: https://claudary.paisolsolutions.com/skills/sections-1
source: "Claudary"
difficulty: intermediate
author: "Claude Code Knowledge Pack"
date: 2026-07-10T10:59:13.160Z
license: CC-BY-4.0
attribution: "Sections — Claudary (https://claudary.paisolsolutions.com/skills/sections-1)"
---

# 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.

## Overview

# 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.

---

Source: [Claudary](https://claudary.paisolsolutions.com/skills/sections-1) · https://claudary.paisolsolutions.com