Feb 10, 2026 · Backend Development

Why Successful Payments Vanished: MyBatis Connection‑Pool Pitfalls Explained

A production incident where payment orders appeared successful but were not persisted was traced to a missing commit in a special‑case branch, causing a polluted connection to be reused by Spring's transaction manager, leading to intermittent failures that were resolved by fixing the commit logic and adding connection‑pool health checks.

Connection PoolDatabase MonitoringDebugging

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Why Successful Payments Vanished: MyBatis Connection‑Pool Pitfalls Explained

DaTaobao Tech

May 19, 2022 · Backend Development

Understanding Proxy Pattern and Spring Transaction Management

The article explains static and dynamic proxy patterns, demonstrates their Java implementations, and shows how Spring’s transaction management relies on dynamic AOP proxies—highlighting that internal calls within the same class bypass the proxy, preventing @Transactional methods from starting or rolling back transactions.

Dynamic ProxyJavaProxy Pattern

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Understanding Proxy Pattern and Spring Transaction Management