Overview

• It offers benefits of a message queuing system.
• Storage queues offer a simple REST based Get/Put/Peek interface that can be accessed via HTTP/HTTPS.
• The use of message queues allows modules in a system to remain decoupled.
• A single message can be up to 64 KB in size.
• A queue can contain millions of messages, up to the total capacity limit of a storage account (500Gb).
  • If you need more than 80GB of messages, use Storage Queues.
• The maximum time that a message can remain in the queue is 7 days.
  • If you need messages for longer than 7 days, guaranteed ordering, or advanced integration patterns, you'll need Service Bus Queue.
• URL format: http://<storage account>.queue.core.windows.net/<queue>

Azure Storage queues and Service Bus queues compared and contrasted

.NET API

// Retrieve storage account from connection string.
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("StorageConnectionString"));

// Create the queue client.
CloudQueueClient queueClient = storageAccount.CreateCloudQueueClient();

// Retrieve a reference to a queue.
CloudQueue queue = queueClient.GetQueueReference("myqueue");

// Create the queue if it doesn't already exist.
queue.CreateIfNotExists();

// Create a message and add it to the queue.
CloudQueueMessage message = new CloudQueueMessage("Hello, World");
queue.AddMessage(message);

// Get the next message
CloudQueueMessage retrievedMessage = queue.GetMessage();

// Process the message in less than 30 seconds, and then delete the message.
queue.DeleteMessage(retrievedMessage);

Authorization for the Azure Storage Services

Queue Service REST API