Wappler Roadmap comments brought this up . .

I see this as a Wappler Extension from Ken in Feb. 2022 –

Have you ever had use for JavaScript functions that run once or a specific number of times? Did these functions need to be retried if they fail or need to be rate-limited? Did you need to specify some sort of prioritization or determine when they should run? Then (maybe :man_shrugging:) the bull queue system is what you were looking for. It‘s powered by Node.js and persists its data in Redis.

Another explanation.