spring-batch

Introduction to Spring Batch

Spring Batch is a lightweight and comprehensive framework designed specifically to assist in the development of robust batch applications. These applications play a crucial role in the daily operations of enterprise systems. Building upon the familiar, productivity-oriented foundations of the Spring Framework, Spring Batch makes it easier for developers to tap into more advanced enterprise services as needed.

For those seeking runtime orchestration tools or management consoles for viewing current and historical batch applications, Spring Batch works seamlessly with Spring Cloud Data Flow. This tool helps orchestrate and manage data integration-based microservices, making it possible to deploy and execute tasks efficiently, including those developed with Spring Batch.

Getting Started with Spring Batch

Two-Minute Tutorial

This swift guide demonstrates setting up a minimal project to run a simple batch job using Spring Batch. It starts with creating a new Maven-based Java project with dependencies on spring-batch-core and hsqldb, the latter serving as an embedded database.

Next, a configuration class sets up the datasource and transaction manager necessary for the job repository:

@Configuration
public class DataSourceConfiguration {
    @Bean
    public DataSource dataSource() {
        return new EmbeddedDatabaseBuilder()
            .addScript("/org/springframework/batch/core/schema-hsqldb.sql")
            .build();
    }

    @Bean
    public JdbcTransactionManager transactionManager(DataSource dataSource) {
        return new JdbcTransactionManager(dataSource);
    }
}

Finally, users can define a batch job class to execute a step that prints "Hello world!" to the output. By running the main method of the HelloWorldJobConfiguration class, the job can be launched, showcasing the simplicity and ease of use that Spring Batch offers for its users.

Getting Started Guide

For a more in-depth exploration, Spring Batch provides a more comprehensive tutorial that tackles a typical ETL (Extract, Transform, Load) batch job. This job reads data from a flat file, processes it, and writes it to a relational database. The Spring Batch project bases itself on Spring Boot, ensuring a modern and integrated development experience. New learners can find this guide, titled "Creating a Batch Service," readily available online.

Sample Projects

For practical hands-on experience, users can explore a variety of sample projects available on the Spring Batch GitHub repository. These samples provide excellent insights into diverse use cases and demonstrate the flexibility and robustness of Spring Batch in real-world scenarios.

Getting Help

Spring Batch provides multiple avenues for users to obtain help, including GitHub Discussions and StackOverflow, where developers can seek support or share knowledge with the community.

Reporting Issues

Users are encouraged to report bugs or feature requests through GitHub Issues. Before submitting a new issue, they should check if a similar issue has already been reported. Comprehensive issue reporting, including test cases and relevant code snippets, helps maintain the quality and usability of Spring Batch.

Contributing and Community Involvement

Spring Batch welcomes contributions from the community. Whether through GitHub Discussions, responding to queries, reproducing issues, or submitting pull requests, every contribution holds value. Active contributors may even be invited to join the core development team.

Licensing and Governance

Spring Batch is open-source software available under the Apache 2.0 license. As part of the Spring community, it adheres to a clearly defined code of conduct and ensures all contributions align with the project’s governance standards.