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Cache / CDN

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• Overview
• Get started
• Concepts

  • CDN-Cache-Control
  • Cloudflare cache responses
  • Customize cache
  • Default cache behavior
  • Head Requests and Set-Cookie Headers
  • Origin Cache Control
  • Retention vs Freshness (TTL)
  • Revalidation
  • Vary
• Cache configuration

  • Purge cache

    • Overview
    • Purge by single-file
    • Purge everything
    • Purge cache by cache-tags
    • Purge cache by hostname
    • Purge cache by prefix (URL)
    • Purge cache key resources
    • Purge varied images
    • Purge zone versions via API
  • Cache Response Rules

    • Overview
    • Create a rule in the dashboard
    • Create a rule via API
    • Terraform example
    • Available settings
  • Cache Rules

    • Overview
    • Create a rule in the dashboard
    • Create a rule via API
    • Terraform example
    • Available settings
    • Order and priority
    • Examples

      • Overview
      • Browser Cache TTL
      • Bypass Cache on Cookie
      • Cache by Device Type
      • Cache Deception Armor
      • Cache everything for hostnames in a list
      • Cache Everything while ignoring query strings
      • Cache Level (Cache Everything)
      • Cache TTL by status code
      • Custom Cache Key
      • Edge Cache TTL
      • Origin Cache Control
      • Query String Sort
      • Respect Strong ETags
    • Migration from Page Rules
  • Edge and Browser Cache TTL

    • Overview
    • Set Browser Cache TTL
  • Always Online
  • Cache by status code
  • Cache keys
  • Caching levels
  • Tiered Cache
• Advanced configuration

  • Serving tailored content
  • Cache Reserve
  • Crawler Hints
  • Early Hints
  • Query String Sort
  • Vary for images
• Performance review

  • Cache Analytics
  • Cache performance
• Cache security

  • Avoid web cache poisoning
  • Cache Deception Armor
  • Cross-Origin Resource Sharing (CORS)
• Reference

  • CDN Reference Architecture
  • CSAM Scanning Tool
  • Development Mode
  • Using ETag Headers with Cloudflare
• Interaction with Cloudflare products

  • Customize cache behavior with Workers
  • How Workers interact with Cache Rules
  • Enable cache in an R2 bucket
  • Control cache access with WAF and Snippets
• Troubleshooting

  • Investigate uncached responses
  • Dynamic content and login issues
  • Issues with MP4 videos on iOS and Safari
  • Bot Management cookie causes cache bypass in O2O setups
  • edgeResponseBytes and cacheResponseBytes discrepancy
  • Always Online
• Changelog
• Glossary
• Agent resources

  • Agent setup
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2. /Cache / CDN
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   Cache configuration
4. /Cache Rules
5. /Examples

Examples

Last updated Apr 16, 2026|Copy as Markdown|View as Markdown|Agent setup

In the following sections, you can find common cache rules examples.

• Browser Cache TTL
• Bypass Cache on Cookie
• Cache by Device Type
• Cache Deception Armor
• Cache everything for hostnames in a list
• Cache Everything while ignoring query strings
• Cache Level (Cache Everything)
• Cache TTL by status code
• Custom Cache Key
• Edge Cache TTL
• Origin Cache Control
• Query String Sort
• Respect Strong ETags

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