Site Reliability Engineering Training & SRE Certification Course

1. Introduction to Google SRE Incident Learning Real-World Incident Case Studies from Google Site Reliability Engineering (2026)

2. Why Incident Case Studies Matter Title: Importance of Real-World Incident Analysis Content: • Real incidents reveal gaps not visible in testing environments • They expose hidden dependencies across systems • Case studies improve preparedness for future failures • Learning from incidents builds long-term reliability and trust • Focus is on improvement, not blame

3. Case Study 1 – Global Configuration Change Failure Title: Misconfigured Global Change Incident Content: • A configuration update was deployed across multiple regions simultaneously • The change unintentionally reduced service capacity • Traffic rerouting increased load on already stressed systems • Resulted in partial service degradation worldwide • Highlighted risks of large-scale, simultaneous changes

4. Lessons from Case Study 1 Title: Key Learnings from Configuration Failures Content: • Global changes must be rolled out gradually • Strong validation is required before full deployment • Automated rollback mechanisms are critical • Change management processes must consider blast radius • Monitoring should detect early signs of degradation

5. Case Study 2 – Cascading Dependency Outage Title: Hidden Dependency Cascade Incident Content: • A minor internal service failure triggered multiple dependent services • Failures propagated faster than expected • Some teams were unaware of their service dependencies • Customer-facing applications experienced intermittent failures • Demonstrated the danger of tightly coupled systems

6. Lessons from Case Study 2 Title: Managing Dependencies at Scale Content: • Clear service ownership and dependency mapping is essential • Systems should fail gracefully instead of catastrophically • Load shedding protects critical services • Dependency awareness must be shared across teams • Regular resilience testing uncovers hidden risks

7. Case Study 3 – Monitoring and Alert Fatigue Title: Alert Overload During an Incident Content: • Engineers received thousands of alerts within minutes • Important signals were buried under noisy notifications • Incident response slowed due to information overload • Manual triage increased recovery time • Highlighted the limits of excessive alerting

8. Lessons from Case Study 3 Title: Improving Incident Response Effectiveness Content: • Alerts must be actionable, not excessive • Prioritization of alerts improves response speed • Clear escalation paths reduce confusion • Incident roles should be predefined • Monitoring should support humans, not overwhelm them

9. Overall SRE Takeaways (2026) Title: Key Reliability Principles from Google SRE Content: • Failures are inevitable in complex systems • Learning culture is more valuable than perfection • Controlled risk enables innovation without sacrificing reliability • Strong observability and automation reduce downtime • Continuous improvement is the core of SRE success

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