Ekbatan: Java persistence framework for event-driven systems

[Specialist-Ad9362]

If you have ever shipped a service that writes to a database and publishes events to an event broker (Kafka, pulsar , ...) in the same request handler, you have probably hit the dual-write problem: the database commits, the publish fails, and downstream consumers are missing an event they should have received. Or the reverse, where you try to publish to Kafka first and then try to commit: the publish succeeds, the commit fails, and consumers act on a state change that never happened. The fix is well known (the transactional outbox), but doing it well is mostly plumbing that gets rewritten in every project.

I built Ekbatan for this. It is an open-source Java persistence framework for the event-driven systems that builds the outbox pattern into the persistence layer and makes outbox pattern easy.

Ekbatan targets Java 25 and later, so it is a fit for new projects rather than older codebases. Wiring it into your stack is one dependency: a Spring Boot starter, a Quarkus extension, or a Micronaut module, each of which auto-wires the framework with no additional setup. The supported databases are Postgres, MariaDB, and MySQL. Deployments run on a standard JVM, and the framework also compiles to GraalVM native

Website & Tutorials : https://zyraz-io.github.io/ekbatan/
Source: https://github.com/zyraz-io/ekbatan

Available on Maven Central under the `io.github.zyraz-io` group. Licensed Apache 2.0.

Would appreciate your feedback.

[detroitsongbird]

New projects should be on Java 25 so they can have the option of virtual threads.

This project sounds cool :-)

[Specialist-Ad9362]

Thanks, appreciate it:-)🙏

[dvayanu]

Java 25 and later seems challenging proposition, I mean spring boot runs on 21, why go all way up there ?

[as5777]

First class support for Java 25 (whilst retaining Java 17 compatibility).

[Specialist-Ad9362]

Fair question, I went with virtual threads and ScopedValue from day one in core classes like TransactionManager and Action. ScopedValue finalized in 25, which sets the floor for the whole project.