Congrats, you deployed your Node app to prod! But how do you actually know if your users are having a good experience? Logs are great initially—until your dashboard becomes overwhelming. We could add metrics but they have a steep learning curve. In this talk we'll see where console.log falls short and learn how metrics help us better define what a good user experience is. We'll also discuss why useful code instrumentation is hard, and propose what we can do to make it easier.

Ops practices are often overlooked within the frontend community, yet they're a powerful tools that help to drastically increase a quality of your product, enhance a quality of life, potentially even decrease costs, and let alone make you more valuable engineer across the bigger organization. We'll spend 20 minutes learning following:
- What's observability and how is it different from monitoring?
- What to measure, and what not?
- How to?
After the talk you'll have an idea of what the subject matter is, and understanding where to dig next, should you find yourself interested.

How to instrument a React app for observability (traces, performance insights, debugging user flows), common pitfalls, and practical implementation tips.

How to instrument a React app for observability (traces, performance insights, debugging user flows), common pitfalls, and practical implementation tips.