RailsConf 2023 - The End of Legacy Code by Daniel Huss

Exploring legacy code with empathy, curiosity, and collaboration to overcome frustration and fear, and create a better working environment and culture.

Key takeaways
  • We often blame legacy code without understanding the context and evolution of the application.
  • Understanding the problem in a nuanced way allows us to approach it with empathy and curiosity.
  • Frustration and fear are natural responses to legacy code, but we can overcome them by understanding the context and working together.
  • Consider starting with exploration and paying it forward, asking questions like “what does this code do?” and “what’s the purpose of this module?”
  • Legacy code often comes from a lack of investment in the codebase, leading to a disinvestment in the code and its maintainability.
  • We should focus on treating people with respect and understanding, rather than blaming them for writing legacy code.
  • Good code is not just about being perfect, but about being maintainable and understandable.
  • Whiteboarding can help teams work together and share knowledge, even with team members who may have different levels of experience.
  • We should strive to maintain a culture of growth and learning, where teams can work together to overcome challenges and improve their skills.
  • Understanding the people and processes involved in creating the code, rather than just the code itself, is key to maintaining and improving it.
  • Legacy code is often the result of a lack of investment in the codebase, rather than a lack of skill or talent.
  • Relaxing our expectations and embracing the complexity of legacy code can help us approach it with a more positive attitude.
  • We should prioritize knowledge sharing and collaboration, ensuring that everyone on the team has a chance to contribute and learn.
  • Ultimately, getting rid of legacy code is not about getting rid of the people who wrote it, but about creating a better working environment and culture.