SEO finding
The CDN in front of the site does not cache its static files
SEO Warning Severity: Medium
Part of the audit Delivery and caching. Finding id: seo.cdnCacheMiss.
What it costs you
Every visitor's request for this file travels to your server. The CDN adds a step without saving time, and a traffic peak hits the origin directly.
What to do
Find out why the CDN does not keep the file: the origin sends Cache-Control no-store, private or max-age=0, sets a cookie on the response, or the CDN's caching rules leave this path or file type out.
What it checks
- Files not served from network cache