I’m having troubles finding any more info on the caching system that’s in place on WPMU hosting. I can only find “Object Caching”. I see that OPcache is disabled in Hummingbird, while Varnish has the option to enable, but I’m really not sure.
Any input?
And on that note, if it is Varnish (and Varnish cache flush is enabled in Hummingbird), will that cache flush act the same as clicking the “clear object cache” button in Hosting > Tools?