Worker Threads in Node.js — When They Unlock Performance (And When They Backfire)
Worker threads can boost Node.js performance — or quietly destroy it. Learn when to use them, and when they make things worse.
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Backend engineering articles on distributed systems, databases, caching, and system design.
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Worker Threads vs Child Processes in Node.js — The Tradeoffs That Actually Matter
A deep dive into isolation models in Node.js: when to use Worker Threads vs Child Processes, and the hidden costs that impact performance at scale.
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Debugging Event Loop Lag in Production — A Playbook for Senior Engineers
A practical guide to diagnosing and fixing event loop lag in Node.js using flamegraphs, async tracing, and real production techniques.
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You’re Measuring Node.js Performance Wrong — Event Loop Lag in Production
How to correctly measure event loop lag in Node.js using perf_hooks, histograms, and percentile-based alerting.
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Event Loop Lag — The Metric That Matters More Than CPU in Node.js
Why CPU usage lies about Node.js health and how event loop lag reveals real performance bottlenecks.