intermediateJPA & Hibernate Internals254 of 469
Explain what happens internally when a request reaches a Spring Boot application (Controller, Service, Repository, Hibernate, JDBC, database)
Tests whether you can trace the full path -- DispatcherServlet routing to the controller, the service layer's transaction boundary opening, Hibernate translating repository calls to SQL via the dialect, and JDBC executing against a pooled connection -- rather than stopping at the controller/service handoff.
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