一直在尝试把一个小型 Node.js 服务部署到一台便宜的 VPS 上，但一直遇到一个奇怪的问题：应用在本地运行正常，但在服务器上几分钟后会随机停止响应。没有崩溃日志，CPU 和 RAM 看起来也正常。有人遇到过类似情况或知道我应该先检查什么吗？
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Been trying to deploy a small Node.js service on a cheap VPS and keep hitting a weird issue: the app runs fine locally, but on the server it randomly stops responding after a few minutes. No crash logs, CPU and RAM look normal. Anyone run into something similar or know what I should check first?