Recent Posts (osiv)

Understanding OSIV in Spring Boot — Convenience or Hidden Bottleneck?

• By Ercan
• 29/10/2025

Spring Boot enables Open Session in View (OSIV) by default, allowing lazy-loaded entities to be accessed even after a transaction has ended. While this behavior simplifies development and prevents common exceptions, it can quietly turn into a performance bottleneck in production. In this article, we’ll explore: How OSIV works under the hood Why it’s helpful for developers What risks it introduces in real-world systems How to measure its performance impact TL;DR: If you want to skip the explanation and dive straight into the code, check out the full implementation on G..