在节点中使用重新支持的“kue”库。js -为什么我的redis内存使用量持续增加?

In a node.js app I'm using the kue queueing library, which is backed by redis. When a job is complete I remove it from the queue. After running about 70,000 jobs overnight the redis memory usage is at approx 30MB. There were 18 failed jobs still in the database, and the queue length is currently zero - jobs are processed more quickly than they are queuing. Redis is not being used in any other way.In a node.js app I'm using the kue queueing lib