https://njange.github.io/A minimal, responsive and feature-rich Jekyll theme for technical writing. 2026-07-15T18:30:26+03:00 James Njange https://njange.github.io/ Jekyll © 2026 James Njange /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2026-07-15T18:00:00+03:00 2026-07-15T18:00:00+03:00 https://njange.github.io/posts/The-Bug-That-Taught-Me-Database-Concurrency/ James Njange

A lesson in database transactions, race conditions, isolation levels, and why SELECT FOR UPDATE exists.