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yanhom1314 avatar yanhom1314 commented on May 23, 2024

这是个好问题，原因是这样的，MetricRegistry内部维护gauge对象是用的WeakReference，当发生gc后就没了，就获取不到指标数据了，所以需要在外部有个StrongReference指向该对象。你说的数据误差肯定是有的，所有跑定时任务获取数据的，误差肯定也是避免不了，所以这个误差还好，可以接受。
希望能解答你的疑问！

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