Bull MQ repeatable job not triggering - node.js

Question

This question is in continuation with this thread Repeatable jobs not getting triggered at given cron timing in Bull
I am also facing the same problem. How should I specify the timezone? I tried to specify as
repeat: { cron: '* 7 14 * * *', tz: 'Europe/Berlin'}
Meaning trigger the job at 14:07 German time zone. Though the job is listed in the queue, but the job is not triggered.
I also tried repeat:
{
cron: '* 50 15 * * *',
offset: datetime.getTimezoneOffset(),
tz: 'Europe/Berlin'
}

Answer 1

I finally figured out the solution.
One thing to note is that I had not initialized a Queuescheduler instance. Ofcourse timezone also plays a crucial role. But without a Queuescheduler instance (which has the same name as the Queue), the jobs doesnt get added into the queue. The Queuescheduler instance acts as a book keeper. Also take care about one more important parameter "limit". If you dont set the limit to 1, then the job which is scheduled at a particular time will get triggered unlimited number of times.
For example: To run a job at german time 22:30 every day the configuration would look like:
repeat: {
cron: '* 30 22 * * *',
offset: datetime.getTimezoneOffset(),
tz: 'Europe/Berlin',
limit: 1
}
Reference: https://docs.bullmq.io/guide/queuescheduler In this above link, the documentation clearly mentions that the queuescheduler instance does the book keeping of the jobs.
In this link - https://docs.bullmq.io/guide/jobs/repeatable, the documentation specifically warns us to ensure that we instantiate a Queuescheduler instance.

Answer 2

You need to manage repeatable queues with the help of QueueSchedular. QueueSchedular takes the queue name as first parameter and connection as second. The code will be as following:
const queueSchedular = new QueueSchedular(yourQueue.name, { connection });