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Explore the 17-year journey of building XLT, an open-source load testing tool, in this conference talk from Devoxx Poland 2024. Learn about the decision-making process that led to creating a custom solution when existing options like JMeter, SilkPerformer, and LoadRunner proved either too limited or too expensive. Discover the evolution of XLT from initial concept to a mature tool that handles 150 projects annually, including the challenges of naming, expensive mistakes, and life-saving feature decisions. Understand how the tool leveraged the Java ecosystem's strengths, migrating through multiple Java versions (6 to 17) while utilizing libraries like HttpClient, Apache Commons, and HtmlUnit. Gain insights into real-world performance testing challenges, the benefits of open-source development under Apache license, and the practical considerations for building versus buying testing tools. René Schwietzke shares candid experiences about tool development, platform dependencies, scaling issues, and reporting improvements that shaped XLT's current capabilities.
