Neil Crawford discusses trunk-based development and continuous deployment as methods to enhance software delivery, emphasizing collaboration on a single codebase and the importance of automated processes. Key elements include feature toggles, critical path tests, and CI/CD tools, all aimed at maintaining a frictionless and efficient development experience without disrupting production. He acknowledges the emotional challenges of change within teams and advocates for dedicated resources and time for learning to support this transition.

1. Trunk based development &
continuous deployment
Neil Crawford
https://www.linkedin.com/in/neilcrawford/
ncrawford@findmypast.com

2. Why am I
here?

3. I’m angry

4. Why do we
make software?

5. To help users achieve
goals and needs

6. We were not!

7. Types of work
Innovation
Improvement
Firefighting
Toil

8. Dev Ops
Flow
Feedback
Continuous Learning and
Experimentation

9. Single product
Single codebase

10. Findmypast
www. search. tree. blog.

11. Findmypast
ecommerce search tree etc...
www.
marshall

12. Extreme Programming

13. State of DevOps

14. Lets go fast!

15. Trunk based
development

16. Developers collaborate
on code
in a single branch
called ‘trunk’

17. Constraint
No branches!

18. Commit to
master
Write
software
Make a
feature
toggle
Ticket
started
Merge to
master
Commit to
branch
End
Write
software
Ticket
finished
Make a
branch
Start

19. UI
Launch
Darkly
Toggles
User
Attributes
Payment
API
Subs
API
Account
API
Etc…
API

20. Constraint
A frictionless
development experience!

23. Constraint
Keep the pipe green!

24. Husky
js
Pre
Push
hook

25. Schema
Tests
Smoke
Tests
LintingBuilds
Unit
Tests
Check
dashboard
Verify
commits
Pre
Push
hook

26. Critical
path
tests
Build &
Test
Check
Teamcity
Check
CI
pipeline
Verify
commits
Pre
Push
hook

27. Push
Check
CI
pipeline
Verify
commits
Pre
Push
hook

28. Push
Check
CI
pipeline
Verify
commits
Pre
Push
hook
Pre push pipeline!

29. Continuous
deployment

30. Every change
goes live
immediately &
automatically

31. Constraint
Don’t break production!

32. Critical path tests

33. Constraint
Recover instantly!

34. Toggles & Rollback

35. Training & Learning

36. Constraint
No manual configuration!

37. App
Service
discovery
CI/CD tools
Dashboards
Logging
Monitoring
Alerting
Dev
Setup
Hosts
Feature
toggles
Analytics

38. Measurement

39. KPI - lead time

40. KPI - throughput

41. Supporting your team
through change

42. Change hurts

43. Motivation
Time
Enthusiasm
Shock
Denial
Confusion
Optimism
Acceptance
Anxiety
Experimentation
Letting go
Resistance
Anger
Valley of
despair

44. Support change with
dedicated resource

45. Findmypast
ecommerce search tree etc...
www.
marshall
Prometheus
Front end tooling
Dev dashboard
Marshall
Spanners
Infrastructure
Tools
CD pipelines

46. Support change with
time to learn

47. 1 hour a day

48. Neil Crawford
https://www.linkedin.com/in/neilcrawford/
ncrawford@findmypast.com
Let’s go fast!!!