Chapter 9: Observability with OpenTelemetry

In the early hours of the morning as you are sleeping in bed, your phone starts to ring. It's not the normal ring that you've set for friends and family but the red-alert ring you set for emergencies. As you are startled awake by the noise, you begin to come to your senses. You think of the recent release of your company's application. A sense of dread fills you as you pick up the call to be greeted by the automated voice on the other end, informing you that you've been requested to join a priority video conference with a team debugging a live site problem with the new release. You get out of bed quickly and join the call.

Once you are on the call, you are greeted by the on-call triage team. The triage team informs you that the application is experiencing a service outage affecting one of your largest customers, which represents a substantial portion of your company's revenue. This outage has been escalated by...