Education series · Week

Week 11 — Observability (what to monitor, what to ignore)

Three signals — front door, code errors, email delivery — catch 95% of production failures. Everything else is noise.

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What you'll walk away with

A scene-by-scene walkthrough of every beat in the video. Plain English. Real numbers. Real workflow.

The walkthrough

  1. Week 11 — Three signals. Three tools. Zero noise.
  2. Alert fatigue is the disease. Quiet observability is the cure.
  3. Three signals. Front door. Code errors. Email delivery.
  4. Every metric you do not act on is an attention tax.
  5. Step one: UptimeRobot. Free. Forever, basically.
  6. Three monitors. One per subdomain. Five-minute checks.
  7. API check hits a /health endpoint, not the root.
  8. Flows check hits the n8n login page. 200 = up.
  9. Slack integration. Failures land in #ops. Not in your inbox.
  10. Kill the API. Wait 5 minutes. Slack alert fires.
  11. Recovery alerts too. So you know when it healed.
  12. Step two: Sentry. Free for one developer. 5,000 errors/mo.
  13. Install. One pip command. One DSN.
  14. Init in main.py. Trace sample 10%. Errors always.
  15. Throw an error on purpose. Sentry catches it with full traceback.
  16. Alert on FIRST occurrence. Not every occurrence.
  17. Ignore noisy errors. Resolve fixed ones. Inbox stays small.
  18. Step three: Postmark bounces. Already on. Free.
  19. Webhook fires on bounce. Goes to n8n.
  20. On bounce: stop sending. On complaint: stop forever.
  21. Bounce rate alert: above 1% in a day, you hear about it.
  22. Single-page dashboard. Three cards. One HTML file.
  23. Card 1: UptimeRobot API. Three monitors. Green or red.
  24. Card 2: Sentry. Last 24h error count. New issues highlighted.
  25. Card 3: bounces. Pulled from your own SQLite.
  26. Three signals. One screen. Open it once a day.
  27. Real-failure rule: 2+ failed checks in a row before paging.
  28. Weekly digest email. Sunday morning. 5-minute scan.
  29. Stop watching: CPU, RAM, request volume. They lie.
  30. Watch: front door, error rate, bounces, failed payments.
  31. Tag releases. Errors group by version. Regression detection is free.
  32. Bonus: Stripe webhook signature failures. Critical signal. Often missed.
  33. Four traps. Save this clip.
  34. Two different jobs. Do not confuse them.
  35. Week 12: launch. The marketing plan in a single day.
  36. Cut your AI bill 90%. Founder pricing $24/mo locked for life. Code LAUNCH30.
  37. Education series. Module 11 of 12. Subscribe so you do not lose the chain.

Cut your AI bill 90%+

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← Week 10 — Production deploy (domain, DNS, HTTPS) Week 12 — Selling it (marketing plan in a day) →

— Jake Morris · Oklahoma veteran · localmodeldojo.com