One annotation, and Spring opens a database transaction, shares its connection with every repository you call, and decides whether to commit or roll back. This article traces a single @Transactional call through the proxy, TransactionInterceptor and the transaction manager, then uses that model to explain propagation, isolation, rollback rules and the pitfalls that follow from them.
Breaking down complex software engineering concepts with code and real-world examples
Backend Engineer with 5+ years of experience building and scaling high-performance microservices for large-scale e-commerce platforms. Have Expertise in Java, Spring Boot, Python and event-driven architectures, with proven ownership in designing Kafkabased systems, improving reliability and observability, and delivering high-impact customer-facing solutions
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