We're in the trenches developing software just like you, and we're excited to share our first-hand experiences using Task Streams. Perforce's Task Streams open the door to lightweight branching without the administrative resources and performance overhead commonly associated with branching. Join Perforce engineers, Steph Turner and Gabe Weiss as they discuss and demonstrate how Task Streams support software development best practices. We'll show how Task Streams... - Improve software quality - Reduce complex merges - Encourage experimentation - Control scope

1. Lightweight Branching with
Perforce Task Streams

2. Steph Turner
Gabe Weiss
Perforce Software
Perforce Software
Lightweight Branching with
Perforce Task Streams

3. The Demand From the Market…
Faster Delivery of Product
Lightweight Branching with
Perforce Task Streams

4. The Impact on Development
Code Quality
Merge Hell
Experimentation
Feature Creep
Lightweight Branching with
Perforce Task Streams

5. The Solutions…
Workflows
Branching
Tools
Lightweight Branching with
Perforce Task Streams

6. Perforce Lightweight Branching
Some stuff we might know that you might not…
Lightweight Branching with
Perforce Task Streams

7. Perforce Branches
Learning to walk before we run…
Lightweight Branching with
Perforce Task Streams

8. Code base has archive files & revision records
Archive
Files
100K
Revs 3x
300K
revx
revcx
revhx
revdx
Lightweight Branching with
Perforce Task Streams

9. Branch creates revision & integ records
Archive
Files
100K
Revs 3x
Integ 2x
To and From
300K
300K
Lightweight Branching with
Perforce Task Streams
200K

10. For every branch
Archive
Files
100K
Revs 3x
Integ 2x
To and From
300K
300K
200K
300K
200K
Lightweight Branching with
Perforce Task Streams

11. Even if
Archive
Files
100K
Revs 3x
Integ 2x
To and From
300K
300K
200K
300K
200K
300K
200K
Lightweight Branching with
Perforce Task Streams

12. You don’t change a single file!
Archive
Files
100K
Revs 3x
Integ 2x
To and From
300K
300K
200K
300K
200K
300K
200K
300K
200K
Lightweight Branching with
Perforce Task Streams

13. The Metadata Upside…
Tracks Branch Relationships
Smarter & Safer Merges
Lightweight Branching with
Perforce Task Streams

14. The Metadata Downside…
Performance
Administration
Branch Policy Restrictions
Lightweight Branching with
Perforce Task Streams

15. The Techniques to Control Metadata…
Overlay (+) Mappings
Obliterate
Lightweight Branching with
Perforce Task Streams

16. Overlay (+) Mappings Branch a Slice
Code Base
Archived
Files
branched
Lightweight Branching with
Perforce Task Streams
Revs
Integ 2x
To and From

17. Overlay Branched Slice on Workspace
Workspace
Code Base
Archived
Files
branched
Lightweight Branching with
Perforce Task Streams
Revs
Integ 2x
To and From

18. The Overlay Issues…
Where are my files?
Where is the branch point?
Lightweight Branching with
Perforce Task Streams

19. Obliterate – Identify unnecessary metadata
Archive
Files
Code
Dev
Branch
Lightweight Branching with
Perforce Task Streams
Revs
Integs
To and From

20. Obliterate it!
Archive
Files
Code
Dev
Branch
Lightweight Branching with
Perforce Task Streams
Revs
Integs
To and From

21. The Obliterate Issues…
Admin Privileges
It’s Final
Lightweight Branching with
Perforce Task Streams

22. Lightweight Branching with
Perforce Task Streams

23. Streams puts code into a container
Code Base
Server
Swarm
Archive
Files
P4V
Lightweight Branching with
Perforce Task Streams
Revs

24. Streams “Import” is the key…
Code Base
Server
Swarm
Archive
Files
Server
Swarm
P4V
Lightweight Branching with
Perforce Task Streams
Revs

25. 3 Cool Things About Streams Import
Lightweight Protections Scheme
Up-to-date Files
Lean metadata
Lightweight Branching with
Perforce Task Streams

26. Oh yeah…1 more cool thing…
Lightweight Branching with
Perforce Task Streams

27. Workspaces generated from stream rules
Code Base
Server
Swarm
Server
Server
Swarm
Swarm
P4V
P4V
Lightweight Branching with
Perforce Task Streams
Archive
Files
Revs

28. Developers Fear the “Uns”
Uncontrolled Merge
Unstable Environment
Unnecessary Recompiles
Lightweight Branching with
Perforce Task Streams

29. Workspaces generated from stream rules
Server
Swarm
Server
Swarm
File
Archive
P4V
Server
Swarm
P4V
Lightweight Branching with
Perforce Task Streams
Revs
Integ To
and From

30. Dev Branch Issues
Metadata
Performance
Delete
Lightweight Branching with
Perforce Task Streams

31. Demo Time
Task Streams
Lightweight
Lightweight Branching with
Perforce Task Streams

32. Before task streams
Server
Swarm
Archive
Files
Parent Stream
P4V
Server
Dev Stream
Swarm
P4V
Lightweight Branching with
Perforce Task Streams
Revs
Integ To
and From

33. Now task metadata is put into shadow tables
Server
Swarm
Archive
Files
Parent Stream
P4V
Server
Task Stream
Swarm
P4V
Lightweight Branching with
Perforce Task Streams
Revs
Integ To
and From

35. Archive and metadata for file
Archive
Files
Parent Stream
Revs
p#3, t#1
p#3
p#3
t#1
Task Stream
t#1
Lightweight Branching with
Perforce Task Streams
Integ To
and From

36. Submit a new version of file…
Archive
Files
Revs
p#3, t#1
p#3
t#2
t#1
Task Stream
t#2
Lightweight Branching with
Perforce Task Streams
t#2
Integ To
and From

37. Shadow integ & rev metadata copied to real table
Archive
Files
Revs
p#3, t#1
p#3
t#2
t#1
t#2
t#1
Task Stream
t#2
t#2
Lightweight Branching with
Perforce Task Streams
Integ To
and From

38. Only interesting metadata gets copied!
Archive
Files
Revs
p#3, t#1
p#3
t#2
t#1
t#2
t#1
Task Stream
t#2
t#2
Lightweight Branching with
Perforce Task Streams
Integ To
and From

40. Shadow integ & rev metadata copied to real table
Archive
Files
p#3, t#1
p#3
t#2
Parent Stream
Revs
t#1
t#2
p#3
t#1
Task Stream
t#2
t#2
Lightweight Branching with
Perforce Task Streams
Integ To
and From

41. Shadow integ & rev metadata copied to real table
Archive
Files
p#3, t#1
p#3
t#2
Parent Stream
Revs
t#1
t#2
p#3
Task Stream
t#2
Lightweight Branching with
Perforce Task Streams
Integ To
and From

43. Task Stream Guidelines
Quick fix
Short term feature development
No reparenting
No children
Lightweight Branching with
Perforce Task Streams

44. Try Perforce for Free
Free for up to 20 users, 20 workspaces, forever.
Lightweight Branching with
Perforce Task Streams

45. THANK YOU!!!
Steph Turner: sturner@perforce.com
Gabe Weiss: gweiss@perforce.com
Lightweight Branching with
Perforce Task Streams
P4Ideax
Forums

46. NEXT DEV TALK
Hacking Perforce with
Matt Attaway
Lightweight Branching with
Perforce Task Streams