Story 4 — DNS Mistake Caught in PR Review

Use for: mistake/failure, quality, attention to detail, learning, process.

Search keywords: mistake failure DNS wrong record pull request PR review quality

30-second answer

During a bulk DNS change, I entered the wrong value for one record. I submitted the pull request, and a teammate caught it during review before it was merged or deployed. I corrected it and continued with the change. There was no customer impact. The lesson for me was that repetitive bulk changes need extra checking, and PR review is a real quality gate rather than just a formality.

STAR answer

Situation

I had to update a large number of DNS records in our code repository.

Task

The goal was to make the required DNS changes accurately and deploy them safely.

Action

While preparing the changes, I accidentally entered the wrong value for one record. I submitted the pull request, and one of my teammates caught the mistake during review before it was merged or deployed.

I corrected the record and continued with the change.

Result

There was no customer impact because the mistake was caught during the review process.

The experience reinforced that repetitive bulk changes are exactly where small mistakes can slip through.

Lesson

I don't think the right lesson is to claim that I never make mistakes. The important part is having a process that catches mistakes before they become incidents and learning how to reduce the chance of repeating them.