Competitive Advantage of Continuous Integration
- 1. Competitive Advantage of Continuous Integration Tim Gifford Lean/XP Coach Lean TECHniques @TimGifford tim@leantechniques.co
- 2. table of contents Fighter Pilots and Fruit Flies 01 02 Engineering A Brief History of Software Continuous Integration Mindset 03 04 Hard Way Continuous Integration - The Examples 05 06 Questions
- 3. Fighter pilots and fruit flies teach us about continuous integration Story Time
- 4. 4 Forty Second Boyd Colonel John Boyd Claimed he could defeat any pilot from a position of disadvantage in less than 40 seconds. "The Iraqi army collapsed morally and intellectually under the onslaught of American and Coalition forces. John Boyd was an architect of that victory as surely as if he'd commanded a fighter wing or a maneuver division in the desert.“ General Charles C. Krulak Referring to the strategy used in Operation Desert Storm section 01
- 5. 5 Forty Second Boyd OODA Loop Observation Action Orientation Decision Complete your loop faster makes your opponent incapable to act Each action forces your opponent to observe and orient. Get inside your opponent’s loop! section 01
- 6. Don’t blink! Fruit Fly Family Reunions
- 7. 7 Fruit Fly Family Reunions Why are fruit flies used in genetics research? 10 Day Life Cycles 100+ Eggs Small Fast Learning section 01 https://www.flickr.com/photos/max_westby/
- 8. We’re in the ‘Industrial Age’ of software. We’ve moved out of the ‘Dark Ages’ and moving quickly towards the ‘Information Age’. What does our future hold? A Brief History of Software Engineerin g
- 9. 9 A Time Before CI Dark Ages Wizards Champions Dragons Myths Legends https://www.flickr.com/photos/xtream_i/
- 10. 10 Today Industrial Age Specialization Science Efficiency Statistical Control Six Sigma Project Management – “things” Capacity Planning Days of Our Lives section 02
- 11. 11 Tomorrow Information Age Manage demand (not capacity) Predictive Demand Modeling – Cellular networks Predictive Provisioning Self Repairing – Netflix’s Chaos Monkey/Gorilla Zero Downtime Defect Free Anti-Fragile Architectures Product Management – “Problems” and their solutions section 02
- 12. Continuous Integration is more than a tool. It is a competitive advantage and new way of thinking for the ‘Information Age’ of software engineering. Continuou s Integration Mindset
- 13. 13 Continuous Integration Mindset Economic Impact Reduction in coordination and transaction costs Reduction on acquisition costs Reduce Total Cost of Ownership Reduce opportunity costs Increased risk mitigation Large batch sizes are necessary when transaction and coordination costs are high. Reducing these costs will enable smaller batch sizes.
- 14. 14 Continuous Integration Mindset Individual Team Culture Product Market Continuous Integration - Layers
- 15. 15 Continuous Integration - Individual Local Development Environment The system should run locally without a network connection. Limited Red Making small changes limit the compile and test failures. Developers need to continuously reduce the time their changes are not shippable. Diff Aware Development Developers anticipate how edits will impact the team. Continuous Integration Mindset Individual Continuous Integration Mindset Add changes to the end of a file Formatting a file results in a the entire file being modified! Don’t be afraid to revert your changes.
- 16. 16 Continuous Integration Mindset Continuous Integration - Team Continuous Demos Teams need to be capable of showing their user facing functionality every day. Technical delivery can signify a team this not integrating to create stakeholder value. Continuous Integration Mindset Team Confident Green When the automated build is successful, the team should feel confident they can deploy to production A lack of confidence is a signal of a missing automated test
- 17. 17 Continuous Integration - Culture Failure Tolerant Mistakes will happen. Discovering information that we previously unknown needs to be celebrated. Look for environmental factors that allow errors to occur. Identify the triggers that cause errors. Continuous Learning Continuous Integration Mindset Continuous Integration Mindset Culture Doing the same thing each year for 10 years does not give you 10 years of experience.
- 18. 18 Continuous Integration Mindset Continuous Integration - Product Always Releasable Your product needs to be always ready for production. No half-based features or long verification cycles. Continuous Integration Mindset Product Use ‘Feature Toggles’ Code branches reduce integration.
- 19. 19 Continuous Integration Mindset Continuous Integration - Market Concept Validation Usage Analytics Continuous Delivery Culling Features Continuous Integration Mindset Market
- 20. Continuou hard. Continuous Integration is s Integration - The Hard Way
- 21. 21 Competency Good Source Control Automated Tests Build Scripts Better Database Scripts Deployment Scripts Smoke Tests Configuration Scripts Best Git Bisect-able Rollback Capability Virtual Machine/Container Bill of Materials Traceability “The Button” Continuous Integration – The Hard Way! 1 section 04
- 22. The best way to understand continuous integration is through a few examples. Examples
- 23. 23 Examples Vertical Delivery - User Centric Delivery Delivery starts with your user. You’ll be tempted to deliver starting from a point farthest from the user. It appears to be more efficient. Things change less frequently down there. Beware…when you do encounter a user, they will expected changes in ways that can not be anticipated. When this occurs all the efficiency transforms to waste. section 05
- 24. 24 Examples Continuous Integration “At Scale” iOS Team: Continuously Integrates (their code) Middleware Team: Continuously Integrates (their code) Data Analytics Team: Continuously Integrates (their code)
- 25. The end is near! Questions
- 26. contact information For more info, please contact us me: Tim Gifford tim@leantechniques.co @timgifford +1 (515) 419.1909 Thank You