The user-agent is an abomination and needs to die. Now, with that being said, I would rewrite the UA header, just to make sure the backend doesn't use the original information.
You can have a look at https://github.com/varnishcache/varnish-devicedetect for a vcl solution. Other solutions exist, obviously. -- Guillaume Quintard On Fri, Oct 13, 2017 at 2:19 PM, Pinakee BIswas <[email protected]> wrote: > Hi, > > We are using Varnish 4.1.8 to cache and speed up our web delivery. Our > page content varies based on following 3 device types: > > 1. Desktop > 2. Mobile (doesn't matter whether android, iOS or windows) > 3. Tablet > > As universally known, varying on User-Agent is quite bad for caching as > there would be thousands of UA. Hence, would like to know a solution based > on following if possible in Varnish: > > 1. Normalize header User-Agent to only the 3 types mentioned above OR > 2. Add a new normalized HTTP header for the above 3 types. Our backed > then Vary on the new HTTP header. > > Would appreciate if any solution could be provided for the above.. > > Thanks, > > Pinakee > > _______________________________________________ > varnish-misc mailing list > [email protected] > https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc >
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