Transactional Outbox Pattern: Stop Losing Events
K
Kodetra Technologies··7 min read Intermediate Summary
Guarantee events publish even when Kafka is down. Outbox pattern with Postgres, step-by-step.
Why your events keep disappearing
You wrap a database write and a Kafka publish in the same function. The DB succeeds, then Kafka times out — or the reverse. Either way you now have an inconsistent system: an order exists with no OrderCreated event, or an event fired for a row that was never committed. This is the dual-write problem, and it shows up in every microservices stack the moment two pieces of state need to stay in sync.
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