Spring Batch - Difference between Step, Chunk and Tasklet
A Step is a domain object that encapsulates an independent, sequential phase of a batch job and contains all of the information necessary to define and control the actual batch processing.
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Steps can be processed in either of the following two ways.
|When to use||Suppose the job to be run a single granular task then Tasklet processing is used.||Suppose the job to be run is complex and involves executing of tasks involving reads, processing and writes the we use chunk oriented processing|
|How it works||No aggregation, just the task gets executed.||It involves reading an input, processing it based on the business logic and then aggregating it till the commit-interval is reached and finally writing out the chunk of data output to a file or database table.|
|Usage||Its not used commonly.||Its the most common way of executing a Step.|
|Use Case||Usually Used in scenarios invloving a single task like deleting a resource or executing a query .||Usually used in scenarios where multiple aggregated steps need to be run like copying, processing and transferring of data .|
Spring Batch Tasklet Example
|<job id="sampleJob" job-repository="jobRepository">
<chunk reader="itemReader" writer="itemWriter" commit-interval="10"/>
Spring Batch Chunk Processing Example
See AlsoSpring Batch Main Menu