EPISODE · May 29, 2026 · 8 MIN
Why Your Node.js Memory Leak Wastes 40 Percent CPU
from The Web Development Podcast with Fexingo: Frontend, Backend, and Modern Web Stack · host Fexingo
Lucas and Luna tackle a silent performance killer in Node.js applications: memory leaks that don't crash your app but gradually consume CPU and degrade throughput. They walk through a real case where a forgotten `setInterval` combined with a closure referencing a large data structure caused a 40 percent CPU increase over three weeks. You'll learn how to spot the pattern using heap snapshots and why tools like `clinic` or Chrome DevTools' memory tab matter more than just checking memory usage. The episode ends with practical strategies: scoping timers, weak references, and monitoring for gradual growth rather than static thresholds. #NodeJS #MemoryLeak #CPUProfiling #Performance #Backend #ClinicJS #ChromeDevTools #HeapSnapshot #JavaScript #ServerSide #Debugging #setInterval #WeakRef #GarbageCollection #Technology #FexingoBusiness #BusinessPodcast #WebDev Keep every episode free: buymeacoffee.com/fexingo
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Why Your Node.js Memory Leak Wastes 40 Percent CPU
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