javactrl-kafka VS cadence

This is a fairly typical pattern for orchestrating microservices. I developed a tiny library exactly for the same purposes using this - https://github.com/javactrl/javactrl-kafka

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May be this..https://cadenceworkflow.io/

a managed esb orchestration for example is exactly same as step functions and workflow engines like cadence - https://github.com/uber/cadence

Having done a reasonable amount of messaging code in my time, I would say the final form of this sort of thing might look more like Cadence[0] than anything like this.

[0] https://github.com/uber/cadence

Emit events from your primary DB (postgres, etc.) to something like kafka or rabbitmq and then catch that in your search engine. There's also some end-to-end solutions like temporal (temporal.io) or cadence (https://cadenceworkflow.io/)