k6 Performance Testing: Automate API and Microservice Load Tests

Modern applications demand flawless performance under pressure, yet traditional load testing tools often feel bloated and difficult to automate. This text-based course introduces you to k6, a modern, developer-centric tool that brings performance testing directly into your daily development workflow. You will go from understanding basic performance concepts to scripting sophisticated, realistic load tests using modern JavaScript. You will learn how to simulate real-world user behavior, establish strict performance thresholds (SLA targets), and automate test execution so that performance regressions are caught before they ever reach production. What you'll learn: - Understand core performance testing concepts, including virtual users, request rates, and key metrics. - Write clean and maintainable k6 test scripts using modern JavaScript standards. - Configure performance thresholds to automatically pass or fail tests based on response times and error rates. - Simulate complex, real-world traffic patterns, including stress, spike, and endurance testing scenarios. - Integrate k6 performance tests into modern CI/CD workflows, such as GitHub Actions and GitLab CI. - Export and analyze test metrics to identify system bottlenecks and visualize performance data. The course begins with foundational performance testing concepts and k6 installation before guiding you through scripting, scenario simulation, and advanced automation workflows. You will progress through written explanations and practical code examples designed to build your confidence step-by-step. This course is designed for beginner QA engineers, developers, and DevOps practitioners who want to learn performance testing. No prior load-testing experience is required, though a basic familiarity with JavaScript and web APIs is helpful. Start reading today to build faster, more reliable APIs and microservices.