Learn how to use high-fidelity synthetic data, video recordings, and traces to write blameless postmortems that drive actual reliability improvements.

A successful incident response doesn't end with a fix—it ends with a Postmortem. The goal of a postmortem is to learn exactly why an outage happened and ensure it never happens again. supaguard provides the "Hard Evidence" needed to move from guessing to knowing.

The 3 Pillars of a Great Postmortem

1. The Evidence (Video & Traces)

Traditional logs tell you what the server saw. supaguard tells you what the User saw.

Video Playback: Embed links to the supaguard execution video in your incident report to show stakeholders exactly how the UI failed.
Deep Trace: Pinpoint the exact line of Playwright code that failed and the associated network waterfall.

2. Impact Analysis

Use supaguard's Multi-Region Data to define the scope of the incident.

Was it a global outage?
Was it restricted to users in Central India?
Did it only affect users on specific browsers (e.g., WebKit)?

3. Verification of Fix

A postmortem is incomplete without proof that the fix works.

The Reproducer: Turn your postmortem findings into a permanent supaguard check. If the bug regresses, you'll know in minutes, not hours.

Blameless Culture

When writing postmortems using supaguard evidence, focus on the System not the Person.

Blame: "The developer forgot to update the selector."
Blameless: "The synthetic check failed because our selectors were brittle. We have now implemented data-testid and added a Resilient Locator check to our CI/CD pipeline."

Postmortem Template (The supaguard Way)

Summary: One-sentence description of the outage.
Impact: Regions affected, duration, and user journeys blocked.
Timeline:
- 02:00 - supaguard detects failure in East US.
- 02:01 - Smart Retry teleports to West Europe; failure confirmed.
- 02:02 - Critical Alert sent to Slack and PagerDuty.
Root Cause: What did the HAR file or Console Log reveal?
Action Items: Links to new supaguard checks created to prevent recurrence.

Writing Better Postmortems with supaguard