DevClubEE #105: Andrei Skopenko, Andrei Solntsev

Info: This presentation focuses on Incident Management I built in NoOnes from a cultural and operational perspective, emphasizing the principle of Full Ownership.

It argues that engineers should be on-call to experience the consequences of their code, which naturally drives quality improvements like writing cleaner code and adding proper observability.

The core message is "You build what you run, you run what you build", aligning with modern high-performing engineering organizations.

Implementing this full ownership model creates closed-loop learning, reduces friction between Dev and Ops, and ultimately leads to fewer incidents.

The presentation also describes the necessary structure for a proper process, including documentation, tooling, and focusing alerts on symptoms (SLIs/SLOs) rather than just noise.

Finally, it highlights the critical need for a dedicated person to oversee and iterate on the entire incident management process.

Info: Usually we think that UI tests are flaky and slow, while unit-tests are fast stable.

Unit-test don't run browser, don't connect to database, don't call http services. They mock everything. What can possible go wrong?

But is that really the case?

It’s time to bust the myth that unit tests are immune to instability. Let's expose the 'dark side' of unit testing!

I’ll share a series of nightmarish examples where unit tests failed unpredictably, and walk you through the detective work required to find and fix them.

Know what’s Happening Next — before everyone else does.

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