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Spring Batch + Boot

Spring Batch auto configuration is enabled by adding @EnableBatchProcessing (from Spring Batch) somewhere in your context. By default it executes all Jobs in the application context on startup (see JobLauncherCommandLineRunner for details). You can narrow down to a specific job or jobs by specifying spring.batch.job.names (comma separated job name patterns). If the application context includes a JobRegistry then the jobs in spring.batch.job.names are looked up in the registry instead of being autowired from the context. This is a common pattern with more complex systems where multiple jobs are defined in child contexts and registered centrally. See BatchAutoConfiguration and @EnableBatchProcessing for more details.

Spring Batch 3.0.0 (new feature)

• JSR-352 Support (http://docs.spring.io/spring-batch/trunk/reference/html/jsr-352.html )
• Upgrade to Support Spring 4 and Java 8
• Promote Spring Batch Integration to Spring Batch
• JobScope Support
• SQLite Support

Scaling & Parallel

• Multi-threaded Step (single process)
• Parallel Steps (single process)
• Remote Chunking of Step (multi process)
• Partitioning a Step (single or multi process)

Multi Threaded step

<step id="loading"> <tasklet task-executor="taskExecutor" throttle-limit="20">...</tasklet></step>

• Step executes by reading, processing and writing each chunk of items (each commit interval) in a separate thread of execution.
• there is no fixed order for the items to be processed, and a chunk might contain items that are non-consecutive compared to the single-threaded case.
• default throttle limit : 4