Spike Test

Find how the service behaves when traffic jumps suddenly.

spike

Detailed Description

A spike test suddenly increases traffic to reveal how the system behaves during sharp load changes. It checks overload behavior, not just normal capacity.

Healthy systems reject, queue, rate-limit, or autoscale predictably. Unhealthy systems timeout, exhaust DB connections, crash workers, or keep latency high after the spike ends.

Mental Model

baseline
-> sudden high load
-> recovery
-> watch errors

When To Use

->Validate promo/event traffic readiness
->Test queue and rate-limit behavior
->Ensure recovery after overload

Tools: k6 ramping-vus, autocannon bursts, queue depth

spike-test.js

Live Editor

Output

Run code to see output...