At the Extremities of Extreme (Agile North 2011)

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At the
Extremities
of Extreme
Julian Fitzell

Image © Christopher Michot
AgileNorth
June 9, 2011

col·lab·o·ra·tion /kəˌlabəˈrāSHən/
n. The act of working with others to
create or achieve something.

Collaboration
bandwidth
• SalesForce - outsource your infrastructure and
app maintenance to another - not bandwidth
• Twitter - Narrow band - cope with many
interactions
• Facebook - widening bandwidth - those with
1,500 friends are about Narrow but those with
20 are much broader
• Online Gaming - WoW - play people you don’t
know or with friends but it is immersive

Online Gaming

• ﬁne-grained collaboration
• immersion
• transparency / feedback
• ﬂow / transitions

A Simple Idea

What if we allowed a group of
developers to simultaneously develop
the same running application?

Roam territory Wolf Pack
Programming ™

Search for a herd

Test prey animals

If it takes ﬂight,
whole pack chases

If it stands, pack circles,
two wolves attack
Select easiest
prey

Roam territory

Search for a herd

Test prey animals

Roam problem domain / code base

Search for a herd

Test prey animals

Roam problem domain / code base

Search for a requirement / feature

Test prey animals

Roam problem domain / code base

Search for a requirement / feature

Test spikes

If it takes ﬂight,
whole pack chases

If it stands, pack circles,
two wolves attack
Select easiest
implementation

If close to a solution, whole
pack programs (ﬂight)

If it stands, pack circles,
two wolves attack
Select easiest
implementation

If close to a solution, whole
pack programs (ﬂight)

If it ﬁghts back, two wolves
program; others rest (stand-off)
Select easiest
implementation

Pairing
restricts your
view on the
world

© Paul Stravinsky

an d
in
t w le t
tr i p programming
pair

Heat and Scent

http://upload.wikimedia.org/wikipedia/commons/7/7d/Canis_lupus_tracks_in_sand.jpg

A wolf’s
concept of
territory
PD-USGOV-INTERIOR-NPS.

Open Channel
Image © Retron / Darren (ﬂickr)

[ Build fails ] Continuous
Integration [ Build succeeds with all tests passing ]
build
[ Build fails but quick ﬁx ]

Revert changes Fix and commit Integration
complete

Repository Repeat

Start Sync local ﬁles Re-Sync local Commit local
ﬁles changes
[ All conﬂicts resolved ]

Test

Build locally

Refactor
Code

Repository Repeat

Start Spike Commit
Select Spike
changes

Test [ Build succeeds with all tests passing ]

Everyone
works on it

Refactor
Code

Repository Repeat

Start Spike Select Spike
Commit
changes
Test Everyone
[ Build succeeds with all tests passing ]
works on it
Code

Refactor

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At the Extremities of Extreme (Agile North 2011)

2. col·lab·o·ra·tion /kəˌlabəˈrāSHən/ n. The act of working with others to create or achieve something.

4. Collaboration bandwidth • SalesForce - outsource your infrastructure and app maintenance to another - not bandwidth • Twitter - Narrow band - cope with many interactions • Facebook - widening bandwidth - those with 1,500 friends are about Narrow but those with 20 are much broader • Online Gaming - WoW - play people you don’t know or with friends but it is immersive

7. Online Gaming • ﬁne-grained collaboration • immersion • transparency / feedback • ﬂow / transitions

10. A Simple Idea What if we allowed a group of developers to simultaneously develop the same running application?

11. ﬁne-grained collaboration

12.

13.

14. Roam territory Wolf Pack Programming ™ Search for a herd Test prey animals

15. If it takes ﬂight, whole pack chases If it stands, pack circles, two wolves attack Select easiest prey

16. Roam territory Search for a herd Test prey animals

17. Roam problem domain / code base Search for a herd Test prey animals

18. Roam problem domain / code base Search for a requirement / feature Test prey animals

19. Roam problem domain / code base Search for a requirement / feature Test spikes

20. If it takes ﬂight, whole pack chases If it stands, pack circles, two wolves attack Select easiest prey

21. If it takes ﬂight, whole pack chases If it stands, pack circles, two wolves attack Select easiest implementation

22. If close to a solution, whole pack programs (ﬂight) If it stands, pack circles, two wolves attack Select easiest implementation

23. If close to a solution, whole pack programs (ﬂight) If it ﬁghts back, two wolves program; others rest (stand-off) Select easiest implementation

24. immersion

25. theCode: is ^ [ :your | reality ]

28. an d in t w le t tr i p programming pair

29. transparency

30. Heat and Scent http://upload.wikimedia.org/wikipedia/commons/7/7d/Canis_lupus_tracks_in_sand.jpg

31. Continuous Testing

32. A wolf’s concept of territory PD-USGOV-INTERIOR-NPS.

34. ﬂow

35.

36. [ Build fails ] Continuous Integration [ Build succeeds with all tests passing ] build [ Build fails but quick fix ] Revert changes Fix and commit Integration complete Repository Repeat Start Sync local files Re-Sync local Commit local files changes [ All conflicts resolved ] Test Build locally Refactor Code

37. Repository Repeat Start Spike Commit Select Spike changes Test [ Build succeeds with all tests passing ] Everyone works on it Refactor Code

38. Repository Repeat Start Spike Select Spike Commit changes Test Everyone [ Build succeeds with all tests passing ] works on it Code Refactor

39. col·lab·o·ra·tion /kəˌlabəˈrāSHən/ n. The act of working with others to create or achieve something.

41. Julian Fitzell jﬁtzell@cincom.com Twitter: @jﬁtzell CINCOM and the Quadrant Logo are registered trademarks of Cincom Systems, Inc. © 2010,2011 Cincom Systems, Inc. All other trademarks belong to their respective companies. All rights reserved

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