Bootiful Spring Boot 3.4: Spring Batch

Spring Batch 5.2 introduces various new features to enhance batch processing. Notable additions include multiple job repository implementations, such as a MongoDB-backed JobRepository and a resource-less JobRepository. The release improves support for Spring Data JPA and item readers/writers, including new Kotlin data class support and concurrent steps using blocking queues. The new features like CompositeItemReader and BlockingQueueItemWriter promise more robust and scalable batch processing by leveraging staged event-driven architecture and virtual threads in Java 21.