feat(task queues): created initial draft for priority and fairness #4080
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flippedcoder
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Jan 7, 2026
| [Task Queue Priority](#task-queue-priority) and [Task Queue Fairness](#task-queue-fairness) are two ways to manage the distribution of work within Task Queues. Priority focuses on how Tasks are prioritized within a Task Queue and Fairness aims to prevent one set of prioritized Tasks from blocking others within the same Task Queue. | ||
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| :::tip Support, stability, and dependency info | ||
| Priority and Fairness is currently in [pre-release](/evaluate/development-production-features/release-stages#pre-release). |
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I think these docs will go live when we do the public preview release. Will confirm with @bchav .
flippedcoder
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Jan 7, 2026
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| If you're using Temporal Cloud, contact Temporal Support or your Temporal account team to enable this feature for your cloud Namespaces. | ||
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| If you're self-hosting Temporal, use the latest pre-release development server and set `matching.useNewMatcher` to `true` in the [dynamic config](https://github.com/temporalio/temporal/blob/a3a53266c002ae33b630a41977274f8b5b587031/common/dynamicconfig/constants.go#L1345-L1348) on the relevant Task Queues or Namespaces. |
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@bchav Just checking if this is accurate or not.
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Jan 7, 2026
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| When you use Worker Versioning and you're moving Workflows from one version to another, the ordering of Workflow Tasks that are moved to the next version is undefined. Tasks redirected to a new Worker version may not be treated fairly with respect to each other or Tasks that aren't redirected. | ||
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| There isn't a limit on the number of fairness keys you can use, but their accuracy can degrade as you add more. |
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@bchav Do we want to include a number here? Like the accuracy doesn't degrade until ~100,000 or something?
lennessyy
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Jan 7, 2026
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In addition to this page, I think these options should also be called out in the individual SDKs. We can just link to this page, but if they are not called out there then developers who only look at their language-specific resources will not find this.
Co-authored-by: Lenny Chen <55669665+lennessyy@users.noreply.github.com>
Co-authored-by: Lenny Chen <55669665+lennessyy@users.noreply.github.com>
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What does this PR do?
This adds a new page to explain Task Queue priority and fairness.