I’m running nginx and am trying to place varnish in front of it. The reason I decided to go with varnish is the plugin that vbulletin made for varnish here: https://www.vbulletin.com/forum/entry.php/2440-vB4Mance-Part-5-Expert-Level-Boosting-vBulletin-Performance-with-Advanced-Caching I haven’t tried to downgrade and get Varnish working with the plugin, but I know of another admin who has had issues with getting the cookies to work properly when this is on. Users won’t stay logged in even if checked. Anyone have any experience?