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Discover how a small team at Facebook tackled the challenge of rebuilding their notoriously unreliable chat system in this 30-minute JSConf talk. Learn about the innovative approach that abandoned conventional MVC in favor of a functional style, introducing modularity and unit testing to improve reliability and prevent regressions. Explore the team's successful strategy for enhancing every important metric for chat while maintaining the ability to add new features without causing issues. Gain insights into the development process that transformed Facebook's chat functionality and the lessons learned along the way.
