I am running Joomla + CiviCRM and the php-fpm requierements are much differents between the two.
I am trying to select the proper upstream php based on the args, like that "/index.php?Itemid=1050&option=com_civicrm&view=Events&lang=fr".
I would like all pages refering to com_civicrm to be handled by a specific upstream and all the rest by another. I am pretty sure that the upstream hash should do the job but I can't find how.

Any suggestion?