Q&A: What is the work model between Queue and Worker?

[chenyanchen]

What is the work model between Queue and Worker?

Pull:

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  Worker --pull--> Queue

or push:

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  Queue --push--> Worker

[bgentry]

Clients pull from their configured queues. However with LISTEN/NOTIFY clients are also made aware of new jobs as they’re inserted so they can be informed when it’s time to try pulling again.

There’s denouncing applied to those notifications so with a higher insert volume you’re not emitting tons of them in quick succession.