Published on September 27, 2013
Question time at the end Submit your questions
Nicola Paolucci Developer Advocate / Git Evangelist @durdndurdn.comI come out nice in pictures, I know :-).
Cheap local branching Full local history Speed Staging area prominent in Open Source Huge community You heard has Feature based workﬂow 10x the speed of svn Distributed cryptographic integrity
ground breaking paradigm is ground breaking
Workﬂow building blocks
1 Common Practices 2 3 Collaboration model We’ll cover how to choose: Branching model Continuous Integration4
Which collaboration model?1 Easy, right?
Fully decentralized Anarchy I do my thing I do my thing, too ANARCHY here’s mine, who tells john? look ma, a goat!
Blessed repository with Gatekeeper He is cool Gatekeeper To have your work accepted, talk to him
and Lieutenants Dictator long live the King! Lieutenants guard the King Blessed repository
Shared common repository we share “everything” luckily no goats here Centralised
atlassian.com/git More on Collaboration models
+ = Centralized Enterprise
Centralized allows ﬁne grained ACLs Branch & Repo permissions
Integration with your Issue tracking and CI
Which branching model?2
Product Releases1 Continuous Delivery2 Two common Branching Models
for Product Releases2.1
One Central Repository1 One Branch per Feature One Branch per Bugﬁx 2 3 Time master feature branches PRJ-123-description
One Central Repository1 One Branch per Feature One Branch per Bugﬁx 2 3 Time master bugﬁx branch PRJ-123-bug-description
Stable Branches4 master is alpha / RC5 Pull Requests6 Before merges Long running Time master stable branch PRJ-345-bug-description bugﬁx 2.2
2.2 for Continuous Delivery
master is in production1 staging is the next version new features oﬀ staging 2 3 with branch names like: username/ISSUE-KEY-summary promoted from staging, can receive hot-fixes
Common Practices3 turbo boost!
What is a Pull Request?
Hey I have some code I want to merge here, take a look? Low friction collaboration Pull Request I have some code here! Can I merge it here?
Single Repository vs Remote Forks
Complete visibility1 No per Dev remotes required KISS 2 3 Pros of a Single Repo All feature branches available
Forks Are Great too BTW
Every one has their remote repository With Forks Full remote copy, each has one Integrator, Gatekeeper, Tech Lead, etc.
Manage codebase maturity1 X department and 3rd parties Dev to Dev interactions 2 3 Read “Cross”
What happens to CI with git?1 An explosion of branches2 3 Performance degradation of build sys
Building everything is expensive1 Automatically build stable and master2 3 Manually trigger feature branch builds
Less Friction and Automation5
Code Quality via pre-commit hooks
Branch from green builds
Automatic merges for the win!
Time master stable branch PRJ-345-bug-description bugﬁx 2.2 stable branch 2.1 Automatic MERGES!
Ripple merges1 Server side update hook2 3 Or tool support
Read more at: bitly.com/automatic-merges
In Conclusion: the recipe
Branching Model Adopt Git Practices Automation & CI setup Conclusions Product workflow Continuous delivery workflow Embrace PR Build automatically, but leave knobs! Single Repo or Forks Collaboration Model Centralized Hooks, hooks everywhere
Nicola Paolucci THANKS YOU FOR YOUR ATTENTION @durdndurdn.comShould I change the pic?
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