🌀 Spring Batch Masterclass: From Basics to Production
Spring Batch is the industry standard framework for developing robust, scalable enterprise batch applications. Whether you need to migrate millions of database records, import daily CSV drops, or automate SFTP file transfers, this curated learning path will take you from a beginner to an expert. Follow the modules below to master chunk processing, tasklets, fault tolerance, and multi-threading.
Module 1: Core Architecture & Fundamentals
🧩 Core Components Explained
Start here! Understand the complete architecture: JobInstance, ExecutionContext, StepExecution, JobRepository, and JobLauncher.
🔧 Tasklet Step vs Chunk Processing
Learn when to run one-off tasks (like file cleanup or API calls) using Tasklets versus using the standard ItemReader/Writer flow.
📌 JobExecutionListener Guide
Execute custom code before and after jobs with lifecycle hooks. Ideal for performance tracking, notifications, and auditing.
🔀 Conditional Job Flow
Control your job's execution path dynamically using exit statuses, deciders, and conditional Step transitions.
Module 2: File Processing & SFTP Automation
📥 SFTP File Download using Tasklet
Securely download files from an SFTP server using JSch. Learn job triggering, remote file cleanup, and production security best practices.
📡 SFTP File Upload via Integration
Upload files securely to an SFTP server using Spring Batch tasklets combined with Spring Integration pipelines.
🗂 Import CSV to Database
Build a full working batch job using FlatFileItemReader, custom ItemProcessors, and high-performance JdbcBatchItemWriters.
📤 Export DB Data to CSV
Extract relational database records and write them into cleanly formatted CSV files using the FlatFileItemWriter.
📁 Multi-File Reading (MultiResource)
Use the MultiResourceItemReader to seamlessly stream and process multiple CSV files dropped into a directory.
Module 3: Enterprise Fault Tolerance & Scaling
🔄 ItemProcessor Data Validation
Learn how to apply strict business rules, data validation, and object transformation safely inside your processing pipeline.
🔁 Spring Batch Skip & Retry Strategies
Never let a single bad row crash your job. Master skip limits, backoff policies, retry templates, and skip listeners.
🚫 Advanced Error Handling
Configure advanced skip conditions and gracefully log invalid records to a dead-letter table during batch execution.
⚡ Multi-Threaded Step Processing
Dramatically boost your job's performance and throughput by implementing parallel chunk processing across multiple threads.
🎥 Learn Spring Batch Visually
Reading code is great, but seeing it built live is better. Watch step-by-step implementations, architecture breakdowns, and live debugging on our dedicated YouTube channel.
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