Developing Microservices with Quarkus/

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Hibernate Reactive

Hibernate Reactive

Learn how to use a SQL database with Quarkus and Hibernate Reactive.

We'll cover the following...

Hibernate Reactive is the reactive API for the Hibernate ORM. It adds support for non-blocking database drivers to enable a reactive style of interaction with the database.

Adding the extensions

To use the Hibernate Reactive extension, we need to add a couple of dependencies, the first being the extension itself, called quarkus-hibernate-reactive. The second dependency is the reactive JDBC driver for the chosen database. Quarkus offers a list of extensions to handle different types of databases, which include:

  • quarkus-reactive-mysql-client used for MySQL.
  • quarkus-reactive-oracle-client used for Oracle Database.
  • quarkus-reactive-pg-client used for PostgreSQL.

Note: In the rest of the course, we’ll use PostgreSQL as the reactive SQL database.

After adding the dependencies, we should have the below new lines in our pom.xml (or build.gradle) file.

XML
// Hibernate Reactive dependency

implementation("io.quarkus:quarkus-hibernate-reactive")



Reactive SQL client for PostgreSQL

implementation("io.quarkus:quarkus-reactive-pg-client")

Using Hibernate Reactive

Using the Reactive Hibernate API is ...