Getting Started with Azure Service Bus: Creating Topics and Subscriptions

To create topics and subscriptions with Azure Service Bus, you can follow these steps:

Create a Service Bus Namespace: In the Azure portal, create a Service Bus namespace if you haven't already. A namespace acts as a container for your messaging entities.
Create a Topic: Within your Service Bus namespace, create a topic to which subscribers can subscribe. A topic is a logical entity that acts as a message container.
- In the Azure portal, navigate to your Service Bus namespace.
- Select "Topics" from the left-hand menu.
- Click on the "Create" button to create a new topic.
- Provide a name for your topic and configure any desired settings, such as enabling partitioning or enabling duplicate detection.
- Click "Create" to create the topic.
Create Subscriptions: Once you have a topic, you can create subscriptions that define the rules for filtering and receiving messages from the topic.
- In the Azure portal, navigate to your Service Bus namespace.
- Select the topic you created in the previous step.
- Under the topic, select "Subscriptions" from the left-hand menu.
- Click on the "Create" button to create a new subscription.
- Provide a name for your subscription and configure any desired settings, such as defining a filter expression or enabling dead-lettering.
- Click "Create" to create the subscription.
Configure Subscribers: To receive messages from the topic, you need to configure your subscribers to connect to the Service Bus namespace and subscribe to specific subscriptions.
- In your application code or service, use the appropriate Azure Service Bus SDK to establish a connection to your Service Bus namespace.
- Subscribe to the desired subscription(s) by specifying the topic and subscription names.
- Implement the message handling logic in your application to process the received messages.

That's it! You have now created a topic and subscription in Azure Service Bus. Messages sent to the topic will be delivered to the appropriate subscriptions based on your defined rules and filters.

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