TCH PY Python Production Notes · T3CH Your SSL Cert Expired Saturday at 2 A.M. Customers Notified You at 9. Synthetic monitoring was green. Browsers were not. Seven hours of checkout revenue, gone.
TCH SPT PY Python Production Notes · Python in Plain English Python FastAPI Lifespan Shutdown Dropped In-Flight Celery Publishes Mid-Deploy SIGTERM killed the app before send_task finished. Jobs never existed.
TCH PY Python Production Notes · Python in Plain English Python Celery Beat Ran Every Scheduled Job Twice After Our RedBeat Migration Two beat processes. One Redis lock key typo. Invoices sent at 09:00 and 09:00.
