---
name: thedaviddias/cdn
source: https://app.decimal.ai/s/thedaviddias-cdn@1/SKILL.md
source_sha256: 2b3bf73d30c3
---

# Use a content delivery network

A CDN serves static assets from geographically distributed servers—users download from the nearest location, dramatically reducing latency and improving load times.

## Quick Reference

- CDNs serve content from edge servers closest to users
- Reduces latency by 50-70% for global users
- Handles traffic spikes and provides DDoS protection
- Popular options: Cloudflare, Vercel, AWS CloudFront, Fastly

## Check

Check if static assets are served from a CDN and if the CDN is properly configured.

## Fix

Configure a CDN to serve static assets with proper caching headers and geographic distribution.

## Explain

Explain how CDNs reduce latency by serving content from geographically distributed servers.

## Code Review

Review the routes, assets, and loading behavior that affect Use a content delivery network. Flag exact files, requests, or rendering steps that add unnecessary network, CPU, or layout cost, and describe the measurement method used to confirm the issue.

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For full implementation details, code examples, and framework-specific guidance,
see `references/rule.md`.

Rule page: https://frontendchecklist.io/en/rules/performance/cdn