Cloudflare Docs

Cloudflare Docs

Overview
Plans
Get started
Concepts
CDN-Cache-Control
Customize cache
Default cache behavior
Head Requests and Set-Cookie Headers
HTTP/2 to Origin
Interact with Cache in Workers
Origin Cache-Control
Retention vs Freshness (TTL)
Cache configuration
Always Online
Cache by status code
Cache keys
Cache Rules (beta)
Caching levels
Edge and Browser Cache TTL

Create Edge Cache TTL page rules
Set Browser Cache TTL

Purge cache

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

Tiered Cache
Advanced configuration
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
Wildcard matching
Troubleshooting
Always Online
Cache Everything while ignoring query strings
Customize Caching

Troubleshooting

The following topics are useful for troubleshooting Cache issues.