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

Live Editor

Output

Run code to see output...