![]() ![]() We can configure multiple datasources, and we must mark as one of them The primary datasource is autowired by default, and other datasources need to be autowired along with annotation. HikariCP comes inbuilt with spring-boot-starter-jdbc or spring-boot-starter-data-jpa starters. Spring boot tries to find and configure connection pooling, first HikariCP, second Tomcat pooling, and finally Commons DBCP2. Spring boot offers ready-made auto configuration to use which can be further customized with advanced options in application.properties file. Spring boot provides straightforward ways to create datasource beans – either using properties configuration or using java configuration. To autowire another non-primary datasource, use annotation. While autowiring the datasource, spring boot will prefer the primary datasource i.e., “mysqlDataSource”. ![]() class JpaConfig = "h2DataSource")ĭataSourceBuilder.url("jdbc:mysql://localhost/testdb") In this case, we are responsible for providing configurations for all datasource beans. To configure multiple data sources, create as many bean definitions as you want but mark one of the DataSource instances as that if we create our own DataSource bean then auto-configuration backs off. Configuring Multiple DataSources with Spring Boot Add the following dependencies to your project: the Hibernate ORM extension: io. It is also possible to fine-tune implementation-specific settings by using their respective prefix ( .*, .*, and 2.*).įor example, we can use the below properties to customize a DBCP2 connection pool. The spring-boot-starter-data-jpa starter automatically get a dependency to HikariCP.
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