Hypothetically speaking if the load-balancer is directing the traffic depending on the cookies then the environments can be very well separated behind the balan

Hypothetically speaking if the load-balancer is directing the traffic depending on the cookies then the environments can be very well separated behind the balancer. My other thought on this was if they use any separate static web asset management or it's all one single environment-switching for ruby. These days one could easily work with the stable REST server and all the web assets are switched between staging/beta/etc envs.