QA & Software Testing
Performance & Load Testing
6 practice questions. Free questions open a full answer guide; the rest unlock with Pro.
- You've been asked to set the performance acceptance criteria for a new checkout API before it ships. How do you decide what numbers to commit to and how to load-test against them, rather than just picking a round latency target out of the air?
- When you run a load test, why is average response time a misleading metric, and what would you look at instead?Go Pro
- What's the difference between a load test, a stress test, and a soak test, and what does each one tell you about a system?Go Pro
- A service passed its load test at the target throughput, yet users still report it feeling slow and timing out under real traffic. The load report shows a healthy average and a p99 of a few milliseconds. Walk me through why the test can lie and how you'd design one that doesn't.Go Pro
- How do you decide what a realistic load profile is for a performance test, and which test types you'd run before a launch you expect heavy traffic for?Go Pro
- A load test passes its average-latency target, but users still complain the app feels slow under load. How would you investigate, and what would you measure differently?Go Pro
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