Performance Testing — JMeter & K6 Interview Q&A ⚡ with Rahul Automation Studio

Performance testing is one of the highest-paying skills in QA — and very few testers know it well! ⚡

This guide covers JMeter and K6 interview Q&As with real performance testing concepts that will set you apart from other candidates! 💰

✅ What's Inside:

📌 Section 1 — Performance Testing Fundamentals (40 Q&As) • What is performance testing & types • Load testing vs Stress testing vs Spike testing • Endurance, scalability & volume testing • Key performance metrics — response time, throughput, TPS • Bottleneck identification — how & where • SLA, SLO, SLI — definitions & importance

📌 Section 2 — JMeter Core (70 Q&As) • JMeter architecture & components • Thread groups, samplers, listeners • Assertions — response, duration, size • Correlation — dynamic values handling • Parameterization — CSV data set config • Timers — constant, gaussian, uniform • Distributed testing with JMeter • JMeter + Jenkins CI/CD integration • JMeter reports — reading & analyzing

📌 Section 3 — K6 Modern Load Testing (50 Q&As) • What is K6 & why companies prefer it • K6 script structure — JavaScript based • Virtual users, iterations, duration config • K6 thresholds — pass/fail criteria • K6 checks — assertions in load tests • K6 scenarios — ramping, constant arrival rate • K6 + Grafana dashboard integration • K6 vs JMeter — comparison & when to use

📌 Section 4 — Performance Analysis (30 Q&As) • How to read & interpret performance reports • How to identify performance bottlenecks • How to communicate results to stakeholders • Performance testing in CI/CD pipeline

📌 Section 5 — Scenario Based (30 Q&As) • Real performance testing scenarios from interviews • "How would you load test a payment gateway?" • "What metrics would you report to management?