Spring Batch Framework offers two processing styles.
- TaskletStep Oriented
- Chunk Oriented
TaskletStep is used when either only reading or writing the data item is required.（只读或者只写）
Chunk is used when both reading and writing the data item is required.（可以读和写的操作）
原文：http://www.kswaughs.com/2016/03/spring-boot-batch-job-example.html