Unite dvcs deck-uk-john stevenson

Friday, April 20, 12

Distributed version control


build it

writecode

check in

get Task


DVCS @ Unite

Issue Tracker


DVCS @ Unite

Content Collaboration


Shaping the future of DVCS


How Atlassian teams moved from centralised to distributed version control

John Stevenson, UK Ambassador, Atlassian

Making the Switch to DVCS

7



Importance of Versioning


Collaboration History of changes Multiple copies









One repository to rule them all


One repository to rule them all


Whats the beefwith Subversion ?


Subversion

Centralised Version Control



Subversion



Subversion


• Merging hell

• Fear of breaking the build• delayed commits lead

to more merging hell

Subversion issues


• Merging hell



Subversion issues


• Merging hell



Subversion issues


• High adoption in Open Source projects

• Enterprises now making the move

• Atlassian teams already migrated

Rise of DVCS





Rise of DVCS





Rise of DVCS


Everyone is doing it!


Everyone is doing it!


Social coding


Social coding


Social coding



Enhancing the development cycle

with DVCSFriday, April 20, 12

Distributed Version Control


Distributed Version Control

Git or Mercurial

Git or Mercurial

Git or Mercurial

Git or MercurialGit or Mercurial

Git or Mercurial


• Smaller projects• Smaller iterations / continuous deployment• Faster feedback• Greater collaboration & innovation• Understanding customers better

DVCS encourages learning


What do I need to learn


What do I need to learn


Differences in workflow?


Not just the command line




The command line is like Marmite...



”“Distributed Version Control is flexible and can fit any

workflow - you can even treat it like Subversion.


”“Distributed Version Control is flexible and can fit any

workflow - you can even treat it like Subversion.

Steve StreetingCreator of SourceTree


Centralised Vs Distributed


Classic Vs Re-imagined


How did Atlassian do it?

Recipe for DVCS adoption


How did Atlassian do it?

Recipe for DVCS adoption


Atlassian DVCS recipe



Tooling


Git and Mercurial Mac Client


Git and Mercurial Mac Client


Commits to SVN & DVCS reposBrowse source inSubversion, Git, Hg, CVS, etc.

Browse and Search source across versioning tools


Commits to SVN & DVCS reposBrowse source inSubversion, Git, Hg, CVS, etc.

Browse and Search source across versioning tools


Source code disinfectant


Source code disinfectant


• Run same builds against old and new VCS

• Continuous Validation• Separate repos for integration

Continuous Integration and release management


• Run same builds against old and new VCS

• Continuous Validation• Separate repos for integration

Continuous Integration and release management


Link every commit to JIRA issues


Link every commit to JIRA issues





Practices


Incremental change

• Try on small projects• Use hybrid tooling


Bringing our history with us


Bringing our history with us





Experience


DVCS mentor


DVCS mentor


DVCS mentor


Code without Limitations

• Fork & Clone• Repositories are cheap,

don't be afraid to mess up


Commit Early, Commit Often


Commit Early, Commit Often


Atlassian DVCS


Atlassian DVCS

Benefits


Benefit: Developer Speed

• Common commands, just faster• Fast tools = happy developers• Complete history at hand


Benefit: Developer Speed

• Common commands, just faster• Fast tools = happy developers• Complete history at hand


• More lessons learnt• Issues resolved more timely• Less risk and impact to a project• More in tune with customers

Benefit: Fast Feedback


• More lessons learnt• Issues resolved more timely• Less risk and impact to a project• More in tune with customers

Benefit: Fast Feedback


DVCS @ Atlassian


DVCS @ Atlassian


• DVCS has great business and technical benefits• Atlassian is shaping the future of DVCS

Wrap up


blogs.atlassian.comsourcetreeapp.com

blog.jr0cket.co.uk@jr0cket

Thank you


Date post:	17-Jan-2015
Category:	Technology
Upload:	atlassian
View:	1,199 times
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Unite dvcs deck-uk-john stevenson

Technology