Azure Message Brokers

Message brokers are essential for building scalable, resilient, and decoupled cloud solutions. Azure provides multiple services that act as message brokers, each tailored to specific scenarios.

Key Azure Messaging Services

• Azure Service Bus – Enterprise-grade messaging with queues, topics, and advanced features like dead‑lettering and duplicate detection.
• Azure Event Grid – Reactive event routing for server‑less architectures.
• Azure Event Hubs – High‑throughput event ingestion for telemetry and streaming.
• Azure Storage Queues – Simple, reliable queues for basic workloads.

Choosing the Right Broker

Sample: Sending a Message with Service Bus

using Azure.Messaging.ServiceBus;

var connectionString = "<YOUR_CONNECTION_STRING>";
var queueName = "sample-queue";

await using var client = new ServiceBusClient(connectionString);
await using var sender = client.CreateSender(queueName);

var message = new ServiceBusMessage("Hello Azure!");
await sender.SendMessageAsync(message);
Console.WriteLine("Message sent.");

Best Practices

1. Enable dead‑letter queues to capture undeliverable messages.
2. Use sessions for ordered processing when required.
3. Leverage duplicate detection to avoid accidental re‑queues.
4. Monitor with Azure Monitor and set up alerts for queue depth and throughput.