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Node.js Performance

Soak Test

Run moderate traffic for a long time to reveal leaks and drift.

soak

Detailed Description

A soak test runs steady traffic for a long period. It exposes problems that short benchmarks miss, especially memory leaks, connection leaks, cache growth, and timer buildup.

Watch heap, RSS, event-loop lag, DB pool usage, error rate, and p99 latency during the run. A stable service should not slowly degrade under constant load.

Mental Model

steady traffic
-> hours
-> heap/RSS/latency trend

When To Use

  • ->Catch memory leaks
  • ->Validate worker stability
  • ->Check DB pool behavior over time
Tools: k6 soak, heap snapshots, event-loop lag trend
soak-test.js

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Output

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