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Apr 7, 2026 · Backend Development

What’s Under the Hood of Spring AOP? A Deep Dive into Its Core Mechanisms

Spring AOP enables cross‑cutting concerns like logging and transactions without altering business code by leveraging dynamic proxies and method interceptor chains, and this article explains its core concepts, proxy selection (JDK vs CGLIB), call‑chain flow, key source classes, and provides a complete Java example.