# Amateur Hour Opera: Alibaba-Cloud PostgreSQL Disaster Chronicle

> A customer experienced an outrageous cascade of failures on cloud database last week: a high-availability PG RDS cluster went down completely - both primary and replica servers - after attempting a simple memory expansion, troubleshooting until dawn. Poor recommendations abounded during the incident, and the postmortem was equally perfunctory. I share this case study here for reference and review.

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LLMS index: [llms.txt](/llms.txt)

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[![featured](/img/hero/cloud/rds-failure.jpg)](https://vonng.com/en/cloud/rds-failure/)

A customer experienced an outrageous cascade of failures on cloud database last week: a high-availability PG RDS cluster went down completely - both primary and replica servers - after attempting a simple memory expansion, troubleshooting until dawn. Poor recommendations abounded during the incident, and the postmortem was equally perfunctory. I share this case study here for reference and review. [**Read more**](https://vonng.com/en/cloud/rds-failure/)