Cache Management Policy

Policies

Where:

  • Time to Live (TTL): The duration (in seconds) that a resource is cached on the CDN system to serve users.

  • Ignore Origin Server No Cache: Removes headers like “no-cache” and “no-store” from the origin server.

  • Ignore Client No Cache: Removes the “no-cache” header from the client request.

  • Ignore Query String: Ignores query strings during cache storage, increasing the HIT ratio on the CDN.

These options enhance the CDN HIT ratio, especially the “Ignore Query String” option. However, using these options depends on the website’s operation mechanism. The CDN system will provide the same cached data for photo.jpg for all connections after enabling “Ignore Query String”:

  • http://www.example.com/path/to/photo.jpg

  • www.example.com/path/to/photo.jpg?clientId=12345&product=A123

  • http://www.example.com/path/to/photo.jpg?clientId=67890&product=A456