We have several places in our code where we need to write to the database and then send a kafka message in a single transaction. This isn't currently handled in quarkus so when one operation fails the other may still succeed, resulting in a mismatch between the database and kafka.

One such scenario is where we create a billable_usage_remittance record and send a billable-usage kafka message in the same transaction. 

To handle this we can implement the transactional outbox pattern: https://microservices.io/patterns/data/transactional-outbox.html

Things to address:

• Database design
• Impotence of consumers
• Message relay (some options mentioned here: https://microservices.io/patterns/data/transactional-outbox.html#related-patterns) 

Done:

• Design document created and reviewed with team
• Stories created