As part of our recent failure testing project, we ran into an interesting failure mode involving the OpenTelemetry SDK for Go. In this post, we’ll show you why our apps stopped sending telemetry for over 15 minutes and how we enabled keepalives to prevent this kind of failure from happening in the future.

Monitoring used to be so easy. Servers had names and lived down the hall, or across the street. If things weren’t working, you could turn them on and off again. Database filling up? Just throw another hard drive in there. Too many simultaneous requests? Rack another server and install a cache. Fast forward a couple decades, and things have gotten much more complicated.

Setting clear, measurable goals is essential for any successful team. However, aligning those goals with the technical work can be challenging in the fast-paced world of software engineering. Engineers might focus on reducing latency or improving uptime, while business leaders look at revenue and customer satisfaction. It gets tricky to track the impact between the two to justify when specific engineering initiatives are important, why, and how they impact the bottom line.

Alerts are a perennial topic, and a CoPE will need to engage with them. The bounds of this problem space are formed by two types of alerts: Understanding what these alerts are and how to configure them is one thing. Thinking about what they each do for your organization, and how using one or the other affects things, is another. The latter will be the focus of this article.

The previous post laid out the basic idea of instrumentation and how OpenTelemetry’s auto-instrumentation can get teams started. However, you can’t rely only on auto-instrumentation. This post will discuss the limitations in more detail and how a CoPE can help teams overcome them.

While investigating some issues users raised around the OpenTelemetry Collector running in AKS, I found a few nuances that are worth noting. In this article, I'll go over some changes you have to implement in your values.yaml to make it work for you.

“How is my app performing?” is one of the most common, yet hardest questions to answer. There are myriad ways to measure this, like error rate, average response time, and so on. Enter the Application Performance Index (aka Apdex), a single metric that attempts to answer, “Are my application’s users happy?” Apdex is an open standard that was formalized in 2005 by the Apdex Alliance.