Publishing Multiple Event Types to a Single Kafka Topic

Answer

In many Kafka-based systems, different event types are published to separate topics. For example, real-time updates and periodic snapshot events are often sent to distinct Kafka topics to ensure clear separation of purpose, schema consistency, and simplified consumer logic.
 

However, in some use cases, teams may prefer to publish multiple related event types to a single topic often to simplify monitoring, streamline message consumption, or reduce operational overhead.
 

This raises the question of whether combining multiple event types into one topic is technically feasible and recommended from a design standpoint.

There are a couple of ways to achieve the desired outcome:

• A consumer can be implemented to read and process messages from both topics.
• Alternatively, you can write into another common topic of your choice messages from both topics.
   

The preferred approach is to use a single consumer for both topics, as it allows unified processing without modifying the existing topic structure.

From the product side, the two event types are intended for different use cases, which is why they are published to separate Kafka topics.