3rd OOM on the VPS: Parallel Builds and a flock Mutex Story
Scene: "the sites are down dude" Wednesday, May 7, afternoon. A message on my phone: "the sites are down dude." Quick check: my own blog (mustafaerbay…
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Docker Ate 56 GB of Disk in a Day: Building a Cleanup Automation
"no posts for hours" — the message I got I noticed it in the evening — my hourly content-generate cron hadn't completed a single successful run since …
Stripe Webhook Was Silently Failing for 5 Days: The 4xx Retry Trap and the Beginning-of-Month Time Bomb
TL;DR 21 invoice.paid webhooks failed for 5 straight days in production. We only noticed because Stripe sent a "we'll auto-disable this endpoint by 5/…
Postmortem: AI Incident Classifier Failed Due to Biased Training Data and Scikit-Learn 1.5
In Q3 2024, a production AI incident classifier mislabeled 42% of critical security incidents as 'low priority' over 72 hours, causing $2.1M in SLA br…