Java Tech Workshop

Apr 17, 2026 · Backend Development

Spring AOP Proxy Modes: Differences Between CGLIB and JDK Dynamic Proxies

This article explains the two proxy mechanisms used by Spring AOP—JDK dynamic proxy and CGLIB—detailing their core principles, required conditions, code examples, performance trade‑offs, how Spring chooses between them, common pitfalls that cause proxy failure, and practical solutions.