Understanding the behavior of a load balancer with status metrics

We already mentioned the load balancer in the introductory section of this chapter. We talked about the three types of AWS load balancers: classic, application, and network. But in this section of the chapter, we shall be focused on the monitoring of load balancers. To be able to monitor a load balancer, we need to have one running that has been created. Use the following guide to create a simple application load balancer: https://docs.aws.amazon.com/elasticloadbalancing/latest/application/create-application-load-balancer.html.

Once the load balancer is created, click on it and scroll down to view the details. This contains more information about the load balancer. On the tabs that are displayed, click on the Monitoring tab to show graphs and metrics about the load balancer, as shown in the following screenshot:

Figure 10.5 – Application load balancer graphs

The preceding screenshot...