Spring Batch Partitioning with Example

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In Spring Batch, “Partitioning” is “multiple threads to process a range of data each”. For example, assume you have 100 records in a table, which has “primary id” assigned from 1 to 100, and you want to process the entire 100 records.

Normally, the process starts from 1 to 100, a single thread example. The process is estimated to take 10 minutes to finish.

Single Thread – Process from 1 to 100

In “Partitioning”, we can start 10 threads to process 10 records each (based on the range of ‘id’). Now, the process may take only 1 minute to finish.

Thread 1 – Process from 1 to 10

Thread 2 – Process from 11 to 20

Thread 3 – Process from 21 to 30

……

Thread 9 – Process from 81 to 90

Thread 10 – Process from 91 to 100

To implement “Partitioning” technique, you must understand the structure of the input data to process, so that you can plan the “range of data” properly.

Example:

Please find git project repository which is on spring batch partitioner

https://github.com/dpq1422/retail-spring-batch

 

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