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Veracity
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Eric Sink eric@sourcegear.com
What is Veracity?
- It’s a DVCS (distributed version control
system)
- It’s open source (Apache License)
- It’s new (1.0 was released on Monday)
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Veracity Eric Sink eric@sourcegear.com 1 What is Veracity? Its a - - PowerPoint PPT Presentation
Veracity Eric Sink eric@sourcegear.com 1 What is Veracity? Its a - - PowerPoint PPT Presentation
Veracity Eric Sink eric@sourcegear.com 1 What is Veracity? Its a DVCS (distributed version control system) Its open source (Apache License) Its new (1.0 was released on Monday) 2 Why another DVCS? Two different
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Why another DVCS?
- Two different meanings for this question
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First interpretation
- What is different about Veracity?
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Second Interpretation
- Eric, you clueless idiot, what
recreational pharmaceutical were you smoking when you decided to build yet another DVCS that has no chance of survival because Git has won and all
- ther tools will eventually be crushed
under the weight of the awesomeness
- f Torvalds and his disciples?
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Venn Diagram
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History Review
- Three generations of version control
tools
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First Generation
- No networking, single file operations
- RCS, SCCS
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Second Generation
- Centralized
- CVS, Subversion, etc.
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Third Generation
- Distributed
- Git, Mercurial, etc.
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The Generations Overlap
- I talked to a guy yesterday who still
uses RCS
- Second generation, centralized version
control is mainstream
- DVCS is not. Not yet.
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You Are Here
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Subversion
- Ignore what Linus said in that YouTube
video
- No matter what you think about svn,
- It’s still the most popular version
control tool in the world
- For good reasons
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Why another DVCS?
- Because the third generation of version
control is just getting started.
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What’s different?
- Not “better”.
- Different.
- My F150 vs. JohnW’s motorcycle
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Apache License
- No GPL constraints
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Commercial Open Source
- As opposed to “community open
source”
- Patches?
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Repository Storage Plugins
- FS3
- MSSQL, Oracle, etc.
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Hash Functions
- SHA-1 default
- SHA-2
- Skein
- 256 or 512 bits
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File Locks
- Some people do need this feature.
- Really.
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JavaScript
- Embedded scripting language.
- Plugins
- Automated test suite
- Advanced features
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User Accounts
- Canonical user ID
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Bug Tracking
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Build Tracking
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Scrum Burndown Charts
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Decentralized Database
- Used for:
–Bug tracking and build tracking –User accounts –Comments –Tags –Who/when –Named branch references –Locks
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How does that db work?
- Just like decentralized version control
–Directories and files –Records and fields
- Changesets
- Push and Pull
- DAG
- Merge
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Intentional Branching?
- No use case
- Sync as often as you can
- Degrade gracefully when offline
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Template Driven
- Record types
- Fields
- Field-by-field merge
- Merge conflicts
- Unique constrains
–Generate –Resolution on merge
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Offline
- Train trip across Europe
- DVCS = all your code is with you
- Veracity = your bug database is with
you as well
- Push all your changes, both tree stuff
and db stuff, when you arrive
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New Book
- Including Subversion,
Mercurial, Git and Veracity
- Pros and cons of
choosing distributed
- vs. centralized tools
- Balanced
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Links
- Veracity
–http://www.veracity-scm.com
- Version Control by Example
–http://www.ericsink.com/vcbe
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Q&A
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Thanks!
- Followups:
–@eric_sink –eric@sourcegear.com –clueless_idiot@sourcegear.com
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