Understanding messaging patterns

Messaging services are reliable services often used for communication across heterogeneous systems that might be disconnected from the networking. Messaging services were used for legacy Windows application synchronization, such as Microsoft Message Queuing (MSMQ). Nowadays, the services are involved in the building of Azure infrastructure in data centers.

Messaging protocols provide required communication between services through the messaging broker that guarantees the delivery and ordering of messages. The broker is responsible for persisting messages while the services is temporarily unavailable. Other patterns of leveraging messaging services are messaging orchestration, load balancing, and reactive programming.

For instance, let’s look at how provisioning resources on the Azure portal can be technically implemented by leveraging queues. When you provision resources from the Azure portal, the message with the task is sent to the...