Support for event externalization into Redis

[yeahfo]

e.g. spring-modulith-events-redis message broker Spring Modulith artifact.

[odrotbohm]

Care to edit your description to elaborate a bit on what you're looking for?

[yeahfo]

Care to edit your description to elaborate a bit on what you're looking for?

Thank you for your reply. My idea is to support Redis as an external event message broker, just like the currently supported kafka/AMQP, as an additional options.

[martinbeentjes]

Have you looked at the interfaces provided by the framework itself? If I look at https://github.com/spring-projects/spring-modulith/tree/471065c113a025ccd75f550989879a2d97ca22bb/spring-modulith-events/spring-modulith-events-amqp/src/main/java/org/springframework/modulith/events/amqp for example, the configuration to externalize to Redis is not that difficult. It might be doable by yourself.

I am working on doing a similar piece of work, but that is for the persistance of the events into a database. An alternative to the JdbcEventPublicationRepository.

With the help of the documentation, I am getting quite far.

[odrotbohm]

I am not a Redis expert and don't know what choices to serialize the event and obtain the routing information would make sense in a Redis world. It looks like Chris is making some deliberate decisions in his integration, but I cannot judge, how reasonable any of this is (I assume it is fundamentally reasonable because it's Chris, but I don't want to blindly copy these assumptions without understanding the tradeoffs).

So if some Redis expert was willing to elaborate on how it is used idiomatically and what decisions would need to be made or could be defaulted to if all we start from is an event plus means to define a target, I'd be willing to investigate the option to add something out of the box. Until then, I'd love to see what others come up with, as — as @martinbeentjes suggested — implementing something from scratch should not be difficult. In fact, you wouldn't even necessarily use the base class, the existing store implementations build upon. A simple @Async @TransactionalEventListener using the (Spring Data) Redis infrastructure would be fine to both get it working and give us the chance to study the translation needs.