[ryanworl]

The most reliable implementation of this pattern is to use the replication binary logs of the database. Your application cannot atomically publish a write to both a database and a messaging system (without introducing a massive headache that you will implement incorrectly).

[hderms]

Yeah but I think it's important to consider whether any microservice should be able to listen to any other microservice inserts or updates. I think using the replication log as the underlying mechanism is a good idea, but you should really be choosing which messages to expose because it forms a public API.

[chatmasta]

The receivers choose which messages to expose by selecting which events to listen for. The broker then only forwards those events. The question is, how do the receivers specify the event type? Do they use the schema of the publisher, or some intermediate interface at the broker?