Lots of data, multiple batches? Sounds like a job for Spring Batch - Desynit
java - Spring data Join multiple tables - Stack Overflow
Spring Batch- MultiResourceItemReader & HibernateItemWriter example - WebSystique
Spring Batch Example | DigitalOcean
Spring Batch Architecture
mysql - query to fetch data from multiple tables in one API (SpringBOOT + JPA) - Stack Overflow
Spring Batch FlatFileItemReader - Read CSV Example - HowToDoInJava
Spring Batch- Read From MySQL database & write to CSV file - WebSystique
Spring Batch MultiResourceItemReader - Read Multiple CSV Files Example
Spring batch pagination with JdbcPagingItemReader | by Shradha Yewale | Spring boot framework by shradha yewale | Medium
Spring Batch - Reference Documentation
Scaling and Parallel Processing
Spring Batch Architecture
Configuring a Step
Chapter 2. The Domain Language of Batch
Guide to Spring Batch Processing | Toptal®
sql - Spring data jpa insert into multiple tables to avoid locking tables - Stack Overflow
Spring Batch - How to read lists of lists (Part II) - Desynit
java - Spring batch Partitioning with multiple steps in parallel? - Stack Overflow
Parallelising bulk DB queries with Spring batch : Part 2 | by Anmolpreet singh Brar | Medium
Spring Batch Job Flow Using a JobExecutionDecider | Keyhole Software
Spring Batch Partitioning example - Mkyong.com
