Hibernate Reactive 1.0.0.Final is the first production-ready release of Hibernate Reactive, the only object-relational mapping solution that supports non-blocking database drivers and a reactive style of interaction with the database.

Hibernate Reactive now supports PostgreSQL, MySQL, MariaDB, Db2, SQL Server, and CockroachDB, and features almost all the functionality of the original Hibernate ORM. Under the hood, Hibernate Reactive uses the Vert.x non-blocking SQL client libraries.

Testing by the Hibernate team shows that use of Hibernate Reactive can, in at least some circumstances, significantly improve performance in situations of high database server load, compared to the use of traditional ORM over JDBC. (However, we must caution that a reactive system isn’t faster than a non-reactive program all or even most of the time!)

You can read much more about this in Sanne’s post.

Hibernate Reactive is now fully integrated in Quarkus, and, especially with the advent of RESTEasy Reactive as the preferred web layer for Quarkus, it’s now easy and convenient to mix and match reactive and blocking database access code within the same program, making it easy to switch to reactive in those parts of the system where its benefits are obtained.

It’s now 11 months since we first announced this work, and we’re all very pleased to see how far this project has come!

Huge thanks to everyone involved.

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