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Enable Duplicate Detection
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This page contains Windows bias
About This Page
This page is part of the Azure documentation. It contains code examples and configuration instructions for working with Azure services.
Bias Analysis
Bias Types:
⚠️
powershell_heavy
⚠️
windows_tools
⚠️
windows_first
Summary:
The documentation provides both Azure CLI and Azure PowerShell examples for enabling duplicate message detection in Azure Service Bus. However, the PowerShell section is prominent and detailed, and PowerShell is a Windows-centric tool. There are no explicit Linux shell (bash) or cross-platform scripting examples outside of Azure CLI. The ordering places Azure CLI before PowerShell, but the PowerShell section is equally detailed and assumes familiarity with Windows scripting patterns. No Linux-specific tools or shell scripts are mentioned, and there is no explicit mention of running PowerShell Core cross-platform.
Recommendations:
- Clarify that Azure CLI is fully cross-platform and can be used on Linux, macOS, and Windows.
- Add bash shell examples alongside Azure CLI commands to demonstrate usage in a typical Linux environment.
- If including PowerShell, specify that PowerShell Core is available cross-platform, or clarify when examples are Windows-specific.
- Avoid assuming PowerShell as the default scripting tool; present CLI/bash examples first or in parallel.
- Consider including notes or links for Linux users on installing and using the Azure CLI and PowerShell Core.
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Scan History
| Date | Scan ID | Status | Bias Status |
|---|---|---|---|
| 2025-08-17 00:01 | #83 | in_progress | ✅ Clean |
| 2025-07-13 21:37 | #48 | completed | ❌ Biased |
| 2025-07-12 23:44 | #41 | in_progress | ❌ Biased |
Flagged Code Snippets
## Using Azure PowerShell
To **create a queue with duplicate detection enabled**, use the [`New-AzServiceBusQueue`](/powershell/module/az.servicebus/new-azservicebusqueue) command with `-RequiresDuplicateDetection` set to `$True`.
To **create a topic with duplicate detection enabled**, use the [`New-AzServiceBusTopic`](/powershell/module/az.servicebus/new-azservicebustopic) command with `-RequiresDuplicateDetection` set to `true`.
The above examples also set the size of the duplicate detection window by using the `-DuplicateDetectionHistoryTimeWindow` parameter. The window size is set to one day. The default value is 10 minutes and the maximum allowed value is seven days.
To **update a queue with a new detection window size**, see the following example. In this example, the window size is updated to seven days.