This document discusses lean software development principles and how they can be applied to eliminate waste. It notes that lean manufacturing principles from Toyota inspired lean software development. Examples are given showing how simpler tools like Sinatra, Ohm, Redis, and OST can replace heavier frameworks like Rails, Mongoid, MongoDB, and Resque, reducing codebases by up to 91% and improving performance. While there may be a steeper learning curve and need to relearn approaches, proponents argue it results in a deeper understanding and more control over the development toolkit.

1. Lean Software
Development

2. twitter.com/cyx
github.com/cyx

3. Citrusbyte

4. openredis.com

6. Lean Software
Development

7. Lean Manufacturing

9. Toyota Production
System

10. overburden (muri)
inconsistency (mura)
eliminate waste (muda)

11. Waste Elimination in
Software Development

13. Trivia

14. Bundler Isolate dep
7000 450 107
10MB 8MB N/A

15. Rails Sinatra Cuba
230K 5K 201
70MB 14MB 10MB
500 req/sec 1000 req/sec 3000 req/sec

16. How much of that do
we actually use?

17. Hypothesis:
50-90% WASTE

18. What if we started to
use simple tools?

19. sinatra ~ rails

20. ohm ~ mongoid
redis ~ mongodb

21. ost ~ resque

22. dep ~ bundler

23. previously : 230K LOC
now : 19K LOC

24. 91% WASTE

25. Cons

26. Steeper learning curve?

28. Relearning

30. Slower development?

31. Pros

32. Performance

33. A deeper
understanding of things

34. Control

35. Our Toolkit

36. cuba
ohm
ost
mote
shield
gs
dep
redis
sequel + postgresql

37. git clone git://github.com/citrusbyte/cuba-app.git

38. #ohm
#phrug
irc.freenode.net

39. Questions?