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Next.js 16.0.3 VPS Crash Issue: Memory Leak in Production

Next.js 16.0.3 VPS Crash Issue: Memory Leak in Production

While deploying a Next.js application on a VPS, we encountered repeated server crashes after upgrading to Next.js version 16.0.3. The VPS became unstable after several hours of uptime, showing high CPU and memory usage and eventually shutting down automatically. Initially resembling a security compromise, it was identified as a memory leak in early Next.js 16.x releases.

Issue Summary

  • Memory usage continuously increased and was not released
  • Swap usage grew rapidly
  • The system hit Out-Of-Memory (OOM) conditions
  • The VPS restarted automatically, causing downtime
  • High CPU usage mimicked crypto-miner activity

Root Cause

Community reports and GitHub discussions indicate that Next.js 16 and early 16.x versions introduced memory and performance regressions in certain production scenarios. Our observations aligned with these reports, as memory consumption kept growing until the VPS exhausted available resources. After changing the Next.js version, the crashes stopped immediately.

Key Takeaways

  • High CPU usage does not always indicate a security breach
  • Memory leaks can closely resemble crypto-mining behavior
  • Long-term memory monitoring is essential in production
  • Early framework releases should be tested carefully before deployment

Recommendation

If your VPS crashes after deploying a Next.js application and you are using Next.js 16.0.3 or other early 16.x versions, closely monitor memory usage and consider upgrading to a more stable release. Careful version management and resource monitoring can prevent unnecessary downtime in production environments. A reliable software company in Gurgaon can help you implement robust deployment pipelines to avoid such issues.

Stability is key in production. Upgrading carefully and monitoring resources can save you from unexpected downtime.