Irina Tsyganok

Knowledge-sharing session from XP2016, which I presented to the tech community at YOOX NET-A-PORTER Group

Transcript

1. XP2016
   

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2. ‘To further the state of agile and lean software
   development by providing a forum at which an
   international group of experts and novices from both
   industry and academia can meet and learn from
   each other’
   XP2016 Mission
   

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3. The People
   

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4. Day 1. Digital Friction Lab
   Tom & Mary Poppendieck
   

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5. Day 1. Digital Friction Lab - Objectives
   Customer Value
   Process
   Communication
   Code Base
   

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6. Confirmation Bias
   Day 1. Digital Friction Lab - Key Takeaways
   

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7. Day 1. Digital Friction Lab - Key Takeaways
   The Process Signals/Patterns
   Problem
   Statement
   Hypotheses
   Experiment
   Not Requirements
   Not Features
   Not Estimates
   Not a backlog of stories
   Do Multiple Experiments
   

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8. Day 1. Digital Friction Lab - Key Takeaways
   Technical Debt Having technical debt is not a
   disaster.
   Disaster is defaulting on the debt.
   

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9. Day 1. Digital Friction Lab - Key Takeaways
   Customer Journey Exercise
   

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10. Highly Successful Digital Organisations
    Day 1. Digital Friction Lab - Conclusions
    Do
    ● Constantly Evolving Products
    ● Problems
    ● Hypotheses
    ● Full Stack Teams
    ● Immediate Connection
    ● Tests at Specification
    ● Deployment Pipeline
    ● Federated Architecture
    Don’t Do
    ● Projects
    ● Features
    ● Estimates
    ● IT
    ● Outsourcing
    ● Testing at the End
    ● Periodic Releases
    ● Monolithic Architecture
    

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11. Day 2. Keynote: XP at Scale
    Elizabeth Hendrickson
    VP Engineering, Big Data
    

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12. Day 2. Keynote Takeaways
    Hiring ‘Culture Fit” kills diversity
    

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13. Day 2. Keynote Takeaways
    - Cross-team pairing
    - “Do it WITH me, not FOR me”
    

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14. Day 2. Keynote Takeaways
    Allocation: optimizing for happiness
    Organisation = a mesh not a hierarchy
    Breakfast = “genius piece of social engineering”
    Don’t hire into leadership roles
    

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15. Day 2. Keynote - Principles
    - Use Conway’s Law to your advantage
    - Separate “What” and “How”
    - Work at sustainable pace
    - Automate relentlessly
    - Ensure feedback cycles are fast
    - Teams own their own quality
    - Reflect, adapt, experiment
    

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16. Keynotes - Takeaways
    Fascinating!
    

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17. Day 2 - Symbiotic Design Practices
    Michael Feathers
    

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18. Day 2 - Symbiotic Design Practices
    - Full Spectrum vs Full Stack Developer
    - Take advantage of Conway’s Law - dynamic reteaming
    - Legacy code = team lifetime != code lifetime
    - Feature deletion
    - The cost of change
    - Software like biology
    

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19. Day 2 - Pair-programming from a beginner’s
    perspective
    Slides on Speaker Deck
    Paper on my blog
    

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20. Day 3 - Exploiting Fast & Slow Thinking
    Rebecca Wirfs-Brock
    Coined meme ‘-driven’ in her paper OOPSLA 1989 (TDD, RDD, PDD)
    

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21. Day 3 - Exploiting Fast and Slow Thinking
    Slides on SlideShare
    

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22. Day 4 - Working Effectively With Legacy Tests
    https://github.com/dmcg https://github.com/npryce
    

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23. Day 4 - Working Effectively With Legacy Tests
    Naming
    Purpose
    Working effectively with legacy tests
    

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24. Day 4 - Closing Keynote
    Nat Pryce & Steve Freeman
    

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25. Day 4 - Closing Keynote
    “Conceptual integrity is the most important consideration in
    system design”
    Fred Brooks
    The Mythical Man Month
    

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26. Thank You
    

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