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Incident Report

Post-mortem incident report template with timeline, root cause analysis, and action items. Learn from production issues.

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VerseKit Team
@versekit
Published January 8, 2026

Available Variables

Use these variables with Handlebars syntax {{variableName}} in your content.

{{action1}}

Revert rate limiting configuration

{{action2}}

Add configuration validation to CI pipeline

{{action3}}

Implement canary deployments for config changes

{{action4}}

Update runbook with rate limiting troubleshooting

{{endTime}}

Jan 15, 15:47 UTC

{{summary}}

The API Gateway experienced a complete outage due to a misconfigured rate limiting rule that blocked all incoming traffic. This affected all API consumers including the web and mobile applications.

{{downtime}}

75 minutes

{{duration}}

1h 15m

{{severity}}

Critical

{{rootCause}}

A deployment at 14:30 UTC included a rate limiting configuration change that inadvertently set the global rate limit to 0 requests per second. This configuration passed CI checks because the test environment had a different rate limiting setup.

{{startTime}}

Jan 15, 14:32 UTC

{{wentWell1}}

Fast incident detection (6 minutes)

{{wentWell2}}

Clear communication in incident channel

{{incidentId}}

INC-2025-0042

{{toImprove1}}

Config changes should have staged rollout

{{toImprove2}}

Need better pre-deploy validation

{{incidentTitle}}

API Gateway Outage

{{revenueImpact}}

$12,500

{{severityClass}}

critical

{{timeline1Time}}

14:32 UTC

{{timeline2Time}}

14:38 UTC

{{timeline3Time}}

15:15 UTC

{{timeline4Time}}

15:47 UTC

{{usersAffected}}

~45,000

{{responder1Name}}

John Doe

{{responder1Role}}

Incident Commander

{{responder2Name}}

Sarah Kim

{{responder2Role}}

Platform Engineer

{{timeline1Event}}

Monitoring alerts triggered for API 5xx errors

{{timeline2Event}}

On-call engineer engaged, began investigation

{{timeline3Event}}

Root cause identified - misconfigured rate limit rule

{{timeline4Event}}

Fix deployed, services restored

{{affectedServices}}

API, Web, Mobile

{{responder1Initial}}

J

{{responder2Initial}}

S