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Your Python cron jobs are failing silently. Here's how to fix it.

DEV Community·Mike Tickstem·21 days ago
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If you're running a Python app on Vercel, Railway, Render, or Fly.io, you've run into this - there's no persistent process, so you can't use cron, APScheduler, or Celery workers the traditional way. Most developers end up using the platform's built-in scheduled tasks — which work fine until they silently stop running and nobody notices for three days. I built Tickstem to solve this, and just shipped a Python SDK. The silent failure problem Here's the thing about cron jobs: they fail in two ways. Loud failures — the job runs, your endpoint returns 500, you get an alert. Fine. Silent failures — the job never runs at all. Maybe a deployment broke something, maybe a config changed. The endpoint is healthy, no errors anywhere, but the job just... stopped. You find out when a user asks why their weekly report didn't arrive. The second type is what kills you. Uptime monitoring doesn't catch it because your server is up. Error tracking doesn't catch it because there's no error. You need a dead man's switch.…

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