Eventbus

eventbus supports Redis, RabbitMQ, and RocketMQ as underlying engines. The chosen engine is configured with the eventbus.type property in application.yml; an oldType property can be used to maintain compatibility while switching engines.

Yes. It supports delayed message delivery and configurable failure retries. For RocketMQ, delay values map to RocketMQ's predefined delay levels; retry counts and next-trigger intervals can be configured per handler or globally.

Required minimum versions are Spring Boot 2.3.0+, Redis 5.0+, RabbitMQ 3.8.0+, and RocketMQ 4.0+.

Yes. Implement the IJson SPI to provide a custom JSON provider, and implement RequestIdGenerator to supply custom message IDs; both extension points are supported by the starter.