ENGINEERING
Auto-rollback Vercel deploy when symbolication breaks post-promotion
Shortly after a Vercel production promotion, it re-verifies live Sentry symbolication on real events and automatically rolls back to the previous deploy and pages on-call if…
How it runs
The automated pipeline, trigger to output.
- TriggerDelayed timer after Vercel promotion
- ActionSample live events for new release from SentrySentry
- LogicDetermine if live symbolication is broken
- ActionRoll back to previous good Vercel deployVercel
- OutputPage on-call with failure detailPagerDuty
What it does
It closes the gap between "deploy passed the gate" and "production is actually symbolicating." A few minutes after promotion it samples live Sentry events from the new release; if real-world frames come back minified, it rolls Vercel back to the last good deploy and pages on-call.
When to use it
Use it when pre-deploy checks pass but production still serves broken traces — usually due to CDN caching, edge-runtime differences, or maps uploaded but not associated to the live dist. This gives you an automatic safety reversal.
How it works
- 1A delayed trigger fires a set interval after a Vercel production promotion.
- 2The flow pulls recent events for the new release from Sentry and inspects their frames.
- 3A logic step decides whether live symbolication is healthy or broken.
- 4If broken, it calls Vercel to promote the previous known-good deploy (rollback).
- 5It pages on-call via PagerDuty with the failing release, sample frames, and rollback target.
Set it up
What you configure once, before turning it on.
- 1Connect VercelDeploys, runtime logs, analytics.
- 2Connect SentryErrors, performance, releases.
- 3Connect PagerDutyIncidents, on-call, escalations.
- 4Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 5Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 6Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
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