Vary HTTP response header

On the VIP Platform, the Vary HTTP response header is respected for these values:

• origin
• RSC
• x-vip-go-segmentation
• x-vip-go-auth
• x-country-code
• x-continent
• x-region
• x-metro-code
• x-city
• x-postal-code

Vary cached content by IP geolocation

The Vary IP geolocation response headers can be utilized by WordPress and Node.js applications to deliver variations of cached content based on an end user’s global location.

For WordPress sites, country-based IP geolocation can also be managed with the VIP Go Geo Uniques plugin. The plugin is specifically designed to work with the VIP Platform’s page cache, but is currently limited to only respect the vary: x-country-code header.

Vary cached content by User-Agent class

For all requests (except those by logged-in WordPress users) the x-mobile-class HTTP request header is populated with 1 of 4 values that correspond to VIP’s classification of the request’s User-Agent.

A WordPress or Node.js application can conditionally alter its response by inspecting the value of the x-mobile-class request header. The result will be cached correctly in its own page cache “bucket”.

x-mobile-class response	Response description
desktop	This device is likely a desktop or it did not match any of the known user agents we know about.
tablet	This device is likely a tablet (Android / iOS)
smart	This device is likely a smart phone
dumb	This device is likely a “dumb” phone