Microsoft has finally released an emulator for Azure Service Bus that enables devs to test their integrations without having to spin up Azure-based instances (and incur the related costs of doing so). This Azure Service Bus emulator is not a port of the former Service Bus for Window Server. 

The Azure Service Bus emulator runs as a Linux-based Docker container, enabling it to be used with any platform (Windows, macOS, and Linux).

Differences from the cloud-based version of Azure Service Bus:

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• Azure-specific integrations like virtual networks, Microsoft Entra ID, and activity logs.
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• Advanced capabilities like autoscaling, geo-disaster recovery, and large message handling.
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• Persisted data: Container restarts reset data and entities.
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The emulator is tailored for local development only and lacks several high-level Azure Service Bus cloud service features (there is no UI portal, visual metrics, or advanced alerting capabilities).

The emulator also enforces quotas like the cloud service, such as:

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• Maximum of 50 queues/topics per namespace.
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• Message size capped at 256 KB.
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• Namespace size is limited to 100 MB.
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#cloud #azure