Jan Giacomelli
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Blog

How I DDoS-ed us with best intentions?

Aug. 5, 2026

Oh, look - lots of users are onboarding. Awesome! A couple of hours later ... The app is slow, ECS tasks for the API are being killed, and database usage is off the charts. This is a true story of how I DDoS-ed us with the best intentions.

Testing is boring - why do I care about it so much?

July 6, 2026

Automated testing is boring to software engineers. Everyone would like to build something that's more complex, feature-rich, or faster. So why do I care about it so much?

How I destroyed production OpenSearch cluster

June 22, 2026

It was a Tuesday. We've released 11 PRs already - so why not release the 12th one as well? What could possibly go wrong? The story about lessons learned from the destroyed production OpenSearch cluster.

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