📝 Postmortem Template

Use Checkly’s template to reflect on and learn from incidents in a structured, blameless way. Fill it out within 48 hours of incident resolution.

🧠 Summary

• Title:

  e.g. Checkout failure on EU production cluster

• Date:

  YYYY-MM-DD

• Duration:

  Start Time → End Time (e.g. 14:37–15:19 CET)

• Severity Level:

  SEV1 / SEV2 / SEV3

• Impact:

  Describe the user/business impact (e.g. 40% of users unable to complete payment)

📆 Timeline of Events

🔍 Root Cause Analysis

What caused the incident?

Explain the technical or process failure—not just the symptom.

Example: Primary database cluster in the EU region became overloaded due to increased traffic. Load balancer failed to redirect traffic to backup nodes due to a misconfiguration.

✅ What Went Well

• Slack alert fired immediately on check failure