أساسيات الانتشار (Propagation)

في هذا الدرس

know what happens when a transactional method calls another.

الموضوعات المخطط لها

• Default REQUIRED: join the existing transaction or start one.
• Inner failure marks the whole shared transaction for rollback.
• REQUIRES_NEW suspends the outer one and runs a separate transaction; use it rarely (for example an audit log that must survive).
• Read-only: @Transactional(readOnly = true) for queries; it is a hint that can skip dirty checking.
• Other modes exist; learn them when you need them.