When people first use Spring Batch, they usually start with a simple single-threaded job. That works for small datasets, but once data volume grows, throughput becomes the bottleneck.

In this sample project, I implemented a partitioned, multi-threaded Spring Batch pipeline to process sales records in parallel using a master/worker step model.

Spring Batch

At its core, Spring Batch is built around a few key abstractions:

Job: a complete batch workflow