The talk I gave at DevopsDays Madison about Mainline Development and Feature Toggles.

1. Merge Hells!!
By @leenasn
Feature Toggles to the Rescue

4. xTEAM

9. Familiar?

12. Building something nobody wants is the ultimate form
of waste
~Eric Ries
The Lean Startup

13. Think about how long would it take you to deliver a
change of one line of code within your application to
production
~Mary and Tom Poppendieck
Lean Software Development, An Agile Toolkit

14. “Continuous Delivery is a software development
discipline where you build software in such a way that
the software can be released to production at any
time.”
http://martinfowler.com/bliki/ContinuousDelivery.html

15. Deployment Pipeline

16. “Continuous integration (CI) is the practice, in
software engineering, of merging all developer
working copies to a shared mainline several times a
day.”

17. Mainline Development

18. Incomplete Features?

19. Feature Toggles

21. Configuration Files

22. ● Deploy != Release
● Avoid Rollback Hells
Release Toggles

23. ● A/B Testing
● Canary Releasing
Experimental Toggles

24. Ops Toggles
● Designing for failure
● Manage Circuit Breakers

25. Architecture?

26. https://martinfowler.com/bliki/BranchByAbstraction.html
Branch by Abstraction

27. https://continuousdelivery.com/implementing/architecture/
Strangler Pattern

28. https://www.martinfowler.com/articles/evodb.html
Database Refactoring

29. The Dark Side

31. $$ Question
How to manage it?

32. Expiry Date

33. Cathedral
Vs
Bazaar

34. Summary

36. Work in small batches

37. http://cnmnewz.com/wp-content/uploads/2014/06/Golden-Gate-Bridge-with-Net-AP.jpg

39. Leena S N
@leenasn / leena.sn@multunus.com
https://medium.com/@leenasn

40. References
Feature Toggles - Martin Fowler's Bliki
Continuous Delivery
Trunk Based Development - Paul Hammant
Merge Hells - Feature Toggles to the Rescue
Devops Journey @ Capital One
DevOps at Capital One: Focusing on Pipeline and Measurement
The Death of Continuous Integration - by Steve Smith
Enabling Continuous Delivery with DB - Pramod Sadalage
Evolutionary Database Design - Martin Fowler, Pramod Sadalage