question: public static String constructQueueRedisKey ( String queueName , String shardName , int priority , PinLaterJobState state ) { return String . format ( "%s_%s_%s.p%1d_s%1d" , PINLATER_QUEUE_KEY_PREFIX , shardName , queueName , priority , state . getValue ( ) ) ; }
target:  Constructs the redis queue sorted set key name given a queue name, shard id and priority.