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Chapter 3. Reactive data source configuration


You can use a reactive data source driver to connect your application to a relational database.

3.1. Setting the reactive data source connection URL

You must configure the connection URL for the reactive data source to complete configuration of your data source.

Prerequisites

  • You have a Quarkus Maven project.
  • You have added a reactive data source driver to your application.

Procedure

  1. Navigate to your Quarkus project directory.
  2. In the src/main/resources/application.properties file, set the value of the quarkus.datasource.reactive.url property to match the connection URL of your reactive data source:

    quarkus.datasource.reactive.url=<datasource_URL>

    For example, to set the reactive data source connection URL for the PostgreSQL data source:

    quarkus.datasource.reactive.url=postgresql:///your_database
  3. Optionally, you can set the maximum number of connections in the connection pool of your data source to improve the performance of your application:

    quarkus.datasource.reactive.max-size=20

    For example, to add a postgresql data source with a reactive data source driver:

    quarkus.datasource.db-kind=postgresql
    quarkus.datasource.username=<your_username>
    quarkus.datasource.password=<your_password>
    
    quarkus.datasource.reactive.url=postgresql://localhost:5432/quarkus_test_database
    quarkus.datasource.reactive.max-size=20

3.2. Disabling a reactive data source in a simultaneous configuration

You can simultaneously configure a reactive driver extension and a JDBC driver extension for the same data source in your application. You can disable the reactive data source driver in a simultaneous configuration, thus forcing your application to use the JDBC data source driver.

Prerequisites

  • You have a Quarkus Maven project.
  • You have a JDBC data source driver and a reactive data source driver configured simultaneously in your application.

Procedure

  1. Navigate to your Quarkus project directory.
  2. Open the src/main/resources/application.properties file.
  3. Set the quarkus.datasource.reactive property to false to disable the reactive data source:

    quarkus.datasource.reactive=false
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