Glossary term
What is write skew? Meaning for developers
Two transactions read the same data and then write different rows. Together they break a rule that neither broke alone. Only Serializable prevents it.
Learn it properly · Backend in DepthLesson 7: Database Fundamentals for API Engineers: Indexes, Transactions, IsolationB-tree indexes, reading EXPLAIN ANALYZE, transactions and isolation levels, and the race conditions they stop, like selling too many items.