https://nalar.dev/tags/transactional-outbox/ Recent content in Transactional Outbox on Nalar Hugo en-us Sun, 20 Sep 2026 00:00:00 +0000 https://nalar.dev/transactional-outbox-keeps-database-state-and-events-aligned/ Sun, 20 Sep 2026 00:00:00 +0000 https://nalar.dev/transactional-outbox-keeps-database-state-and-events-aligned/ <p>A service often needs one operation to change database state and emit an event. An order may move to <code>paid</code> while <code>OrderPaid</code> must reach a message broker. Those two writes cross different systems, so a normal database transaction cannot make both commits atomic.</p> <p>Writing the database first leaves a gap: the process can stop after commit but before publishing. Publishing first creates the opposite gap: consumers can observe an event for a database change that later fails.</p>