root-cause-analysis
Conduct systematic root cause analysis to identify underlying problems. Use structured methodologies to prevent recurring issues and drive improvements.
What this skill does
# Root Cause Analysis ## Table of Contents - [Overview](#overview) - [When to Use](#when-to-use) - [Quick Start](#quick-start) - [Reference Guides](#reference-guides) - [Best Practices](#best-practices) ## Overview Root cause analysis (RCA) identifies underlying reasons for failures, enabling permanent solutions rather than temporary fixes. ## When to Use - Production incidents - Customer-impacting issues - Repeated problems - Unexpected failures - Performance degradation ## Quick Start Minimal working example: ```yaml Example: Website Down Symptom: Website returned 503 Service Unavailable Why 1: Why was website down? Answer: Database connection pool exhausted Why 2: Why was connection pool exhausted? Answer: Queries taking too long, connections not released Why 3: Why were queries slow? Answer: Missing index on frequently queried column Why 4: Why was index missing? Answer: Performance testing didn't use production-like data volume Why 5: Why wasn't production-like data used? Answer: Load testing environment doesn't mirror production Root Cause: Load testing environment under-provisioned Solution: Update load testing environment with production-like data Prevention: Establish environment parity requirements ``` ## Reference Guides Detailed implementations in the `references/` directory: | Guide | Contents | |---|---| | [The 5 Whys Technique](references/the-5-whys-technique.md) | The 5 Whys Technique | | [Systematic RCA Process](references/systematic-rca-process.md) | Systematic RCA Process | | [RCA Report Template](references/rca-report-template.md) | RCA Report Template | | [Root Cause Analysis Techniques](references/root-cause-analysis-techniques.md) | Root Cause Analysis Techniques | | [Follow-Up & Prevention](references/follow-up-prevention.md) | Follow-Up & Prevention | ## Best Practices ### ✅ DO - Follow established patterns and conventions - Write clean, maintainable code - Add appropriate documentation - Test thoroughly before deploying ### ❌ DON'T - Skip testing or validation - Ignore error handling - Hard-code configuration values
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