
Engineering
Memory Leaks in Node.js: Detection and Prevention
Closures, event listeners, and uncleared timers — the most common memory leak patterns in Node.js and how to find them before they crash production.
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5 articles

Closures, event listeners, and uncleared timers — the most common memory leak patterns in Node.js and how to find them before they crash production.

Not everything belongs in the request-response cycle — queues, workers, retries, and dead letter patterns for reliable background processing.

When HTTP polling isn't enough — a practical guide to WebSocket connections, message patterns, and production concerns like reconnection and scaling.

Structured logging, log levels, and correlation IDs — the patterns that turn noisy log output into a searchable, actionable observability layer.

The event loop is the engine behind every async operation in JavaScript — here's how it actually works, beyond the hand-wavy explanations.