I am a little confused as to whether priorities work at the job or queue/tube level. The reason I ask is that I am using a beanstalkd integration module in Drupal. This module enables one to define queues/tubes and assign a priority value to each queue/tube created.
What I am trying to work out is the following. Let's say I have two queues/tubes in Beanstalkd (queue A and queue B). If items assigned to Queue A have a higher priority than items in Queue B, does that mean items in Queue B will only be processed when Queue A is empty?