Max length How many (ready) messages a queue can contain before it starts dropping them. Dropping strategy decided by overflow arg. | Max length bytes The max length of a queue in bytes. | Message TTL How long a message published to a queue can live before it is discarded (milliseconds). | Auto expire How long a queue can be unused for before it is automatically deleted (milliseconds). | Delivery limit The number of times a message can be redelivered before dropped or dead-lettered | Max age Stream queue segments will be deleted when all messages in the segmented is older than this. Valid units are Y(ear), M(onth), D(ays), h(ours), m(inutes), s(seconds). Segments are only deleted when new messages are published to the stream queue.