beginner~2h
Spring Data JPA & Hibernate
"Just extend JpaRepository and you get CRUD for free" is true and also hides a lot. This module is what's actually running underneath that one line of interface declaration.
Learning objectives
- Beginner: State what JpaRepository actually generates for you, and recognize that Hibernate — not magic — is doing the SQL translation underneath.
- Intermediate: Write derived query methods correctly and know when a method name is too complex for that convention.
- Advanced: Justify why ddl-auto=update/create is unsafe in production and what a real migration strategy replaces it with.
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Spring Data JPA & Hibernate