What is a CDN pull zone?

A pull zone is origin-pull HTTP caching. The first request for /logo.png is a miss: NetDNA fetches it from your origin, stores it on SSD at the edge, and later hits never touch origin until TTL expires or you purge.

When to use a pull zone

• WordPress, Magento, static sites, SaaS front-ends.
• Files that already have a stable origin URL.
• You want the CDN to stay in sync without uploading.

How a miss becomes a hit

1. Browser asks cdn.example.com/app.css.
2. Anycast DNS sends the request to the nearest PoP.
3. If cached, the PoP answers. If not, it pulls from origin, stores, answers.
4. Cache-Control and zone defaults decide TTL. Header guide.

Do not put on a pull zone

HTML that is personalized, checkout, or admin. Video mezzanines that you would rather upload once belong on a push zone or VOD.

Support how-tos: pull-zone knowledge base. Hub: all zone types.