Micronaut by default will automatically perform Round Robin client-side load balancing using the servers in this list. This combined with adds extra resiliency to your Microservice infrastructure.

The Publisher is returned because the process for selecting a may result in a network operation depending on the Service Discovery strategy employed.

For example, you may wish to load balance between services in a particular zone or you may wish to load balance between servers that have the best overall response time.

In fact that is exactly what the Netflix Ribbon support does, described in the next section.