Xiao Lou's Tech Notes

Apr 23, 2020 · Backend Development

Why Did My Dubbo Gateway Leak Memory? Uncovering the Hidden Zookeeper Subscription Bug

This article details a mysterious memory‑leak in a Dubbo microservice gateway caused by repeated Zookeeper subscriptions, explains how the issue was diagnosed using heap dumps and source inspection, and shows the simple fix of disabling reference checks to prevent the leak.