Memory Optimization

This walks you through profiling and fixing memory issues in JavaScript applications, covering both browser and Node.js environments. You get concrete workflows for Chrome DevTools heap snapshots, React DevTools profiler, and the Node inspector. It includes separate reference guides for leak detection, optimization techniques, and monitoring targets. Use this when you're debugging OOM crashes, tracking down leaks, or trying to cut your cloud bills by reducing memory footprint. The quick start is more of a cheat sheet than a complete example, so you'll want to dig into the reference docs for actual implementation patterns.

skills.sh installs: 552
GitHub stars: 379
last updated: Aug 21, 2026

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Install

$ npx -y skills add aj-geddes/useful-ai-prompts --skill memory-optimization --agent claude-code

Installs into .claude/skills of the current project.

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Overview

Memory optimization improves application performance, stability, and reduces infrastructure costs. Efficient memory usage is critical for scalability.

When to Use

High memory usage
Memory leaks suspected
Slow performance
Out of memory crashes
Scaling challenges

Quick Start

Minimal working example:

// Browser memory profiling

// Check memory usage
performance.memory: {
  jsHeapSizeLimit: 2190000000,    // Max available
  totalJSHeapSize: 1300000000,    // Total allocated
  usedJSHeapSize: 950000000       // Currently used
}

// React DevTools Profiler
- Open React DevTools → Profiler
- Record interaction
- See component renders and time
- Identify unnecessary renders

// Chrome DevTools
1. Open DevTools → Memory
2. Take heap snapshot
3. Compare before/after
4. Look for retained objects
5. Check retained sizes

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