Why MyBatis Mapper Interfaces Don't Need Implementation Classes

MyBatis generates mapper implementations at runtime using JDK dynamic proxies; the proxy intercepts interface calls, builds a statementId from the interface’s fully‑qualified name and method name, looks up the corresponding MappedStatement via the namespace‑id convention, and delegates execution to SqlSession, eliminating the need for a concrete class.

JDK Dynamic ProxyJavaMapperMethod

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Why MyBatis Mapper Interfaces Don't Need Implementation Classes

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.

CGLIB ProxyJDK Dynamic ProxyJava

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

Java Captain

Mar 6, 2019 · Backend Development

Understanding Spring Transaction Proxies: JDK Dynamic Proxy and CGLIB

This article explains how Spring implements declarative transaction management using proxies, compares JDK dynamic proxies and CGLIB, demonstrates their behavior with code examples, and clarifies which method modifiers support transactional annotations in Spring applications.

Backend DevelopmentJDK Dynamic ProxyJava

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Understanding Spring Transaction Proxies: JDK Dynamic Proxy and CGLIB

Senior Brother's Insights

Jan 1, 2019 · Backend Development

Deep Dive into Spring AOP: Core Classes, Annotation Processing, and Proxy Generation

This article provides a comprehensive analysis of Spring AOP's core proxy mechanisms, detailing the roles of advisor, advice, and pointcut classes, the annotation‑driven configuration process, and how Spring Boot automatically creates proxies using JDK or CGLIB based on configuration flags.

AspectJJDK Dynamic ProxyProxy Generation

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Deep Dive into Spring AOP: Core Classes, Annotation Processing, and Proxy Generation