It may not be the *appropriate* parameter name to use, but this sort of technique may help:
https://wikitech.wikimedia.org/wiki/Provenance
You'd want to look at the *current* VCL in templates/varnish in the operations repo to see how it's presently done for *wprov*.
-Adam
On Wed, Aug 26, 2015 at 4:00 PM, Erik Bernhardson < ebernhardson@wikimedia.org> wrote:
On Wed, Aug 26, 2015 at 3:58 PM, Chad Horohoe chorohoe@wikimedia.org wrote:
Aren't we uncached here anyway? Special pages and all.
-Chad
Actually the events we are recording here measure the users interaction with the pages they found. The current idea is to add a query parameter to all search results (only for users in the test, from javascript) so that when they land on that page we know they came from search and start collecting interaction events.
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