https://errorzap.com/tags/lessons/Recent content in Lessons on Error ZapHugoen-usTue, 09 Jun 2026 00:00:00 +0000https://errorzap.com/posts/the-alert-that-went-to-nobody/Tue, 09 Jun 2026 00:00:00 +0000https://errorzap.com/posts/the-alert-that-went-to-nobody/A critical event fired a perfectly good alert into a receiver wired to absolutely no one — and everybody slept fine because of it.https://errorzap.com/posts/i-found-a-secret-in-a-git-repo/Thu, 21 May 2026 00:00:00 +0000https://errorzap.com/posts/i-found-a-secret-in-a-git-repo/I went looking for a leaked credential in a client&rsquo;s stack and found one staring back at me — committed by my own hand, baked into history forever.https://errorzap.com/posts/how-my-own-backup-deleted-my-files/Wed, 04 Mar 2026 00:00:00 +0000https://errorzap.com/posts/how-my-own-backup-deleted-my-files/I deleted nine files on purpose — and my backup node helpfully deleted them everywhere else too.https://errorzap.com/posts/when-your-backup-client-lies-about-its-name/Fri, 27 Feb 2026 00:00:00 +0000https://errorzap.com/posts/when-your-backup-client-lies-about-its-name/A green-lit backup agent that hadn&rsquo;t saved a single byte in weeks, because the machine and the server disagreed about what it was called.https://errorzap.com/posts/the-git-rm-that-deleted-30000-files/Wed, 25 Feb 2026 00:00:00 +0000https://errorzap.com/posts/the-git-rm-that-deleted-30000-files/One innocent <code>git rm -r</code> to untrack a folder, and 30,209 notes vanished off the disk in a single keystroke.https://errorzap.com/posts/the-settings-api-that-corrupted-every-setting/Thu, 19 Feb 2026 00:00:00 +0000https://errorzap.com/posts/the-settings-api-that-corrupted-every-setting/I changed one backup-retention field, ran it twice, and every client&rsquo;s settings ate themselves like a snake swallowing its own tail.