K6 – Performance Testing Masterclass with JavaScript

<div>Performance testing today is not just about generating load — it is about measuring, analyzing, and validating system behavior across APIs and browsers with proper observability.</div><div><br></div><div>This <u><b>K6 Performance Testing MasterClass</b></u> teaches you how to design complete performance testing solutions using K6 and JavaScript — covering both backend API flows and frontend browser-level validation.</div><div><br></div><div>You will start by mastering core K6 concepts including stages, thresholds, checks, tags, and custom metrics. You will learn how to design realistic load models and validate non-functional requirements effectively.</div><div><br></div><div>The course then walks you through building real-world API test flows such as registration, login, and transactional chains. You will extract dynamic data from JSON responses, implement assertions, and structure modular K6 scripts using JavaScript best practices.</div><div><br></div><div>Beyond APIs, you will integrate the K6 Browser library with Playwright to perform browser-level load testing. You will capture Web Vitals metrics such as LCP and CLS, track page-wise performance, and validate real user experience under load.</div><div><br></div><div>A dedicated section covers Grafana Cloud integration, where you will stream K6 metrics to Grafana dashboards for real-time monitoring, visualization, and performance analysis. This bridges the gap between load generation and observability — a key skill in modern DevOps environments.</div><div><br></div><div>Finally, you will integrate K6 tests into CI/CD pipelines to automate performance validation.</div><div><br></div><div>By the end of this course, you will be capable of designing scalable, observable, production-ready performance testing frameworks using K6.</div><div><br></div><div>This is a complete API + Browser + Observability Performance Engineering MasterClass.</div>

What you'll learn:

• Design and implement Load, Stress, Spike and Soak tests using K6 with real-world performance scenarios.
• Design realistic load models using stages, thresholds, checks, tags and custom metrics.
• Build end-to-end API load testing flows in K6 including registration, login and transactional scenarios.
• Implement browser-level load testing using K6 Browser library with Playwright integration.
• Measure and analyze API and Browser performance metrics including Web Vitals and page-wise tracking.
• Integrate K6 with Grafana Cloud to visualize, monitor and analyze performance metrics in real time.
• Execute end-to-end performance testing projects from planning to result interpretation.