First Move (11~18) - Code, Learn, Build
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First Move (11~18) - Code, Learn, Build

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← Java Enterprise Development|Level 3: Enterprise Microservices, Framework Architecture & Production Engineering

20. Transaction Management (@Transactional), ACID & Database Isolation Levels

Lesson 20 of 25
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Transaction Management (@Transactional), ACID & Database Isolation Levels

Master Declarative Transaction Management (`@Transactional`), rollback boundaries, ACID properties, Propagation levels (REQUIRED, REQUIRES_NEW), and Isolation levels (READ_COMMITTED, REPEATABLE_READ, SERIALIZABLE).

Spring Transaction Management & Isolation Levels

### Database Isolation Levels & Anomalies - **READ_UNCOMMITTED**: Risks Dirty Reads. - **READ_COMMITTED**: Prevents Dirty Reads; risks Non-Repeatable Reads. - **REPEATABLE_READ**: Prevents Non-Repeatable Reads; risks Phantom Reads. - **SERIALIZABLE**: Strict serial execution; zero anomalies, lowest concurrency performance.
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