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Node.js Performance

Memory Leak Guard

Watch heap trend and alert when memory climbs continuously.

leaks

Detailed Description

A memory leak guard watches the trend of heap or RSS instead of only checking one value. Memory can naturally move up and down, so the trend matters more than a single sample.

In production, this signal helps detect leaks before the process is killed. Pair it with heap snapshots so you can move from symptom detection to object-level evidence.

Mental Model

sample heap
-> keep rolling window
-> detect upward slope

When To Use

  • ->Catch leaks before OOM restarts
  • ->Monitor long-running workers
  • ->Validate fixes after removing retained references
Tools: process.memoryUsage, memwatch-next, heapdump
memory-guard.js

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