Performance Testing
Load, stress and performance engineering for modern stacks.
Performance testing is what stops a product from collapsing under Black Friday traffic. This hub covers the modern performance stack — JMeter, k6, Gatling, Locust — plus the concepts hiring managers screen for: think time, ramp-up, saturation point, service level objectives and observability.
Every guide is scenario-driven: how to script a checkout, how to model a spike test, how to read a Grafana dashboard, and how to tell an engineering manager which of the three bottlenecks to fix first.
Start with these pillar guides
The highest-value pages on the site for performance testing.
Topics in Performance Testing
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Latest in Performance Testing
k6 vs JMeter in 2026: We Benchmarked Both on a Real Microservices App
We load-tested a 10,000 VU microservices checkout API on identical hardware with Grafana k6 and Apache JMeter 5.6. See the RAM, CPU, and node-density benchmarks that settle the 2026 debate.
Read articlek6 Load Testing Tutorial 2026: First Test in 15 Min
Learn k6 load testing hands-on — install, script a 1,000-VU run, analyze results and wire into Grafana + CI/CD. Free 2026 walkthrough with copy-paste code.
Read articlePerformance Testing Interview Questions: JMeter, k6 & LoadRunner (2026)
Prepare for performance testing interviews with 35+ questions covering JMeter, k6, LoadRunner, stress testing, load testing, and performance metrics. Includes real scenarios and hands-on examples.
Read articleJMeter Interview Questions for Experienced Engineers (2026): 40+ Real Scenarios
40+ JMeter interview questions for experienced performance engineers — thread groups, correlation, distributed testing, JMeter-DSL, CI integration, NFRs and bottleneck analysis.
Read articlek6 vs JMeter: Performance Testing Compared (2026)
k6 vs JMeter compared for performance testing in 2026 — speed, language, ease of use, cloud integration, and when to choose each, with code examples for both tools.
Read articleLoad Testing Tools Comparison: 10 Top Picks (2026)
10 best load testing tools compared in 2026. k6, JMeter, Gatling, Locust, LoadRunner, BlazeMeter ranked by performance, ease of use, and cost.
Read articleJMeter Tutorial for Beginners 2026 — Free Step-by-Step (Load Test in 1 Hour)
Free JMeter tutorial 2026 — install, thread groups, samplers, listeners, assertions, recording, correlation & CI/CD with real examples. Run your first load test in 1 hour.
Read articleJMeter Tutorial for Beginners 2026: Complete Guide
Complete JMeter tutorial for beginners in 2026. Installation, first test plan, thread groups, samplers, listeners, assertions, CSV parameterization, distributed runs, CI/CD, and HTML report generation.
Read articlecURL to k6 Load Test — Convert a Real Request into a Performance Suite
Turn a single cURL into a full k6 load test: thresholds, checks, ramping VUs, and CI-friendly output. Includes a free cURL → k6 converter.
Read articleConvert a Postman Collection to a k6 Load Test
Turn any Postman collection into a production-ready k6 load test with thresholds, ramping VUs, and CI integration.
Read articlePerformance Testing Complete Guide 2026 — Load, Stress, Soak & Spike
The 2026 complete performance testing guide — load vs stress vs soak vs spike, k6 & JMeter, SLIs/SLOs, distributed load, and a repeatable methodology for QA teams.
Read articlek6 Tutorial — Modern Load Testing in JavaScript (2026)
Get productive with k6 in an hour: scripting, stages, thresholds, checks, and the Grafana Cloud output that replaces JMeter for teams shipping to Kubernetes.
Read articleJMeter Distributed Load Testing — Master + Slaves Setup (2026)
Break through the single-JVM ceiling with JMeter distributed testing. RMI setup, SSL config, cloud-native alternatives (Kubernetes + k6), and a real 50k-user test plan with results.
Read articlePerformance Testing — frequently asked questions
1.What is performance testing?
2.What is the difference between load, stress and spike testing?
3.Which is better, JMeter or k6?
4.How do I get started in performance testing?
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External reference: ISTQB Foundation Level