Open-Source

Quick takeaways Solve real problems first - successful open source projects start by addressing actual needs, not by looking for problems to fit a solution Keep breaking changes minimal - Watermill stayed on v1 for 6 years with no breaking changes in the core library, building trust with users Examples and documentation are crucial - provide real-world examples with automated tests, not just simple “hello world” demos Promotion matters - creating a great library isn’t enough; you need to actively share it through conferences, blog posts, and communities Be patient with growth - Watermill took 7 years to reach 8,000 stars; overnight success in open source is rare Introduction In this episode, we share the story of how Watermill, our event-driven library for Go, grew from a side project to a popular open source library with over 8,000 GitHub stars and 100+ contributors.