Linear, the SaaS project‑management tool, suffered a catastrophic data loss when a TRUNCATE CASCADE command unintentionally wiped production tables, prompting a detailed post‑mortem that outlines the timeline, root cause, recovery steps, impact, and a set of concrete preventive measures.
The article analyzes a production incident where dozens of MySQL UPDATE statements unintentionally set a column to zero because misplaced quotation marks caused MySQL to interpret the expression as a boolean comparison with implicit type conversion, and it explains how to detect and prevent such errors.
The article analyzes a real‑world incident where a series of MySQL UPDATE statements with incorrectly placed quotation marks caused the entire source_name column to be set to zero, explains MySQL's implicit type conversion behavior, and shows how to recover the data using binlog analysis and flashback SQL.
This article recounts a February 2020 MySQL data‑loss incident, detailing how the author identified the offending binlog, used open‑source tools like binlog2sql and MyFlash to reconstruct and restore the missing records, and reflects on operational lessons learned.
