kafka - AnupTechTips

Transactional Outbox Pattern in Python: Never Lose an Event

Published on: November 4, 2026 by Anup Das

Transactional outbox pattern in Python: an outbox table feeding three SKIP LOCKED relay workers and Kafka

Your order saved, but the event never reached Kafka. Build the transactional outbox pattern in Python and Postgres: a SKIP LOCKED relay that’s safe on several workers, fixes for ordering and cleanup, and lessons from seven teams that hit the dual write.