Freaks City

This article explores scenarios where multiple data sources are required and demonstrates how to configure them using Spring Boot. The configuration approach primarily references another blog post: https://blog.csdn.net/u012060033/article/details/123759694 For a concise overview, readers may refer to: https://www.cnblogs.com/chen-msg/p/7485701. ...

In database operations, a transaction is treated as a single unit of work. To ensure data integrity, transactions adhere to four key principles, often abbreviated as ACID: Atomicity: Ensures that all operations within the transaction succeed. If any step fails, the entire transaction is aborted, and no changes are applied. Consistency: Maintai ...

Login Module After completing all the previous modules, we continue with login validation, global exception handling, transaction management, and AOP. A simple login checks the database for the employee. This can be implemented using a three-layer architecture. Controller Layer Create a LoginController class dedicated to handling login requests ...