It is recommended to centralize the operations of the database in the services layer, and control the operations of each table in a single service class

[mingshengke]

It is recommended that all operations of the database be centralized in the services layer, and the operations of each table should be controlled within a single service class. Multiple service classes should not be used to operate on the same table. The purpose is: when caching a table, it only needs to be processed in one place to avoid missing updates to the cache.