Bullmq repeatable job every x seconds and a long running job

[mai1x9]

Hi,

I have created a repeatable job which runs every 20 seconds. There is only 1 worker processing the job. Each job takes 1 minute to finish.

However I could see after 20 seconds, another job is created. As per my understanding, the next repeatable job must be created only after the current job is processed right. That is after 1 minute.

Can someone explain how exactly bullmq creates repeatble job.