The Benefits of a Message Queue
A message queue handles a variety of tasks asynchronously. The end-user doesn’t have to wait for one task to complete to go onto the next one. Think about placing an order online. You click the “buy now” button, and data gets sent off to shipping and distribution systems, but you don’t need to wait for that to happen. Instantly, you’re told that your order has gone through, and usually, you have an email confirmation and an order reference. A message queue will be shuttling these different bits of information where they need to go. It distributes them between systems and services, providing a better user experience and a smoother running system.
It’s highly desirable that MQs are persistent. This means that the MQ will continue trying to deliver to the consumer even if it’s not available right now. That could be due to system downtime. Persistent MQs, like IronMQ, will continue trying until they get a notification from the consumer that it’s received the data. A persistent MQ is a reliable way to distribute tasks across a system or network of systems.
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