How to java-configure separate datasources for spring batch data and business data? Should I even do it?

Question

My main job does only read operations and the other one does some writing but on MyISAM engine which ignores transactions, so I wouldn\'t require necessarily tr

Answer 1

Add @BatchDataSource to the batch data source if your spring boot's version is 2.2.0 or later.

Details of this annotation is as follows:

/**
 * Qualifier annotation for a DataSource to be injected into Batch auto-configuration. Can
 * be used on a secondary data source, if there is another one marked as
 * {@link Primary @Primary}.
 *
 * @author Dmytro Nosan
 * @since 2.2.0
 */
@Target({ ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER, ElementType.TYPE, ElementType.ANNOTATION_TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Qualifier
public @interface BatchDataSource {

}

for example:

@BatchDataSource
@Bean("batchDataSource")
public DataSource batchDataSource(@Qualifier("batchDataSourceProperties") DataSourceProperties dataSourceProperties) {
        return dataSourceProperties
                .initializeDataSourceBuilder()
                .type(HikariDataSource.class)
                .build();
}