Creating an alert of an elevated error rate in our application

As a reminder, our helloworld application has a very simple design:

All user traffic is going through an ELB instance. Since we use the HTTP to communicate, we can easily identify when something unexpected is happening.

If you take a closer look at the monitoring tab of one of your load balancer instances (http://amzn.to/2rsEaLY), you will see some of the top-level metrics you should care about:

While each application has its own behavior, an increase in latency or HTTP 5XXs is ...

Get Effective DevOps with AWS now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.