The Practical Road towards CQRS and Event Sourcing
summary
Practical roadmap that live-codes a game-rental app using Java 11, Spring Boot, Axon Framework and Axon Cloud as the distributed event store and message bus; shows commands/events/queries as message API, event sourcing replaces command DB with an event store, and projections stream events into an H2/JPA query model via a query update emitter and subscription queries; demonstrates routing with TargetAggregateIdentifier, command/query gateways, and eventual consistency tradeoffs; notes Axon has been production-used for over a decade and includes stepwise demo scripts to register, rent, return and inspect events.
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chapters (4)
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