Global concurrency
BullMQ supports a global cap on concurrent jobs across all workers for a queue. The dashboard exposes it as a text input on the queue detail page.
Set from the UI
Open the queue's settings dropdown, pick "Global concurrency", enter a number.
Bull-board calls Queue.setGlobalConcurrency(n) on your behalf. Workers respect the new cap on their next job pickup.
Set in code
The value is stored in Redis so any worker across any process sees it.
Bull-only queues: global concurrency isn't supported. The UI hides the control.
Read-only mode
Read-only mode disables the control. If you want stakeholders to see the number but not change it, readOnlyMode: true is the switch.