Optimistic-Locking - Tag - Tonderai Khataihttps://tldkhatai.com/tags/optimistic-locking/Optimistic-Locking - Tag - Tonderai KhataiHugo -- gohugo.ioen-usTue, 06 Oct 2026 00:02:00 +0100Compare-and-Swap Updates in PostgreSQL, Explainedhttps://tldkhatai.com/posts/postgres-cas-explained/Tue, 06 Oct 2026 00:02:00 +0100Tonderai Khataihttps://tldkhatai.com/posts/postgres-cas-explained/

Compare-and-swap means: change this row, but only if it is still what I last saw. In SQL that’s an UPDATE with a guard in the WHERE clause, and you check how many rows it touched.

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