https://detafti.ir/en/tags/transactions/Recent content in Transactions on MDT - Personal siteHugoen-ushttps://detafti.ir/en/notes/spring-transactional-in-production/Fri, 11 Sep 2026 17:10:00 +0330https://detafti.ir/en/notes/spring-transactional-in-production/<p>In review I still see <code>@Transactional</code> used as a blessing: put it on a method, and the database will behave. It will not. Spring starts a transaction when a <strong>proxy</strong> intercepts an incoming call. If the call never hits the proxy, you have no transaction, no rollback, and a very confusing production bug.</p> <h2 id="what-i-believed--what-i-do-now">What I believed → what I do now</h2> <p>I used to sprinkle <code>@Transactional</code> on every service method “to be safe.” I now put it on the one method that is the use-case boundary, I write a test that proves rollback, and I treat same-class private calls as a smell.</p>