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www.realdolmen.com

ORGANIZE YOUR CHICKENS:
NUGET FOR THE ENTERPRISE

JANUARY 16, 2013 | SLIDE 1

WHO AM I?

Xavier Decoster
Antwerp, Belgium

Technical Consultant, RealDolmen
Co-founder of MyGet.org
Microsoft Extended Experts Team
Author of Apress Pro NuGet

http://www.xavierdecoster.com
@xavierdecoster


IN THIS SESSION

Chickens?!


We all have dependencies: deal with them!

DEPENDENCY MANAGEMENT


SYMPTOMS YOU GOT A PROBLEM…

No Versioning Strategy
“Not Invented Here” Binaries Duplicated
Syndrome all over VCS
Release Bottlenecks

Time Consuming Builds No License Management
Monolithic
Frameworks
Conflicting References OSS Inventory


WELCOME TO DEPENDENCY HELL

“A term for the frustration
of software users who have
installed software packages which have
dependencies on specific versions of other
software packages.” (Wikipedia)


IMPACT OF DEPENDENCY HELL

Version Control Delays
Branching Strategy Increased Time-to-market
Requirements Management Frustration, both for
Architecture developers and users
Coding & Testing Decreased ROI
Continuous Integration VCS storage size ++
Time spent waiting/idle ++
Build Management
Value revenue --
Deployment
Release Management Bite me! I’m
outta here..


A thin red line connecting many ALM processes…

PACKAGE MANAGEMENT


FIRST THINGS FIRST
 From dependency hell to package hell?
 Broken process/architecture cannot be fixed by a tool!

 Hell is hell, whether it’s the home of
 Assemblies
 Packages
 Gems
 What. Ever.

 Escape route
 Separating Concerns  Improves Cohesion
 Increasing Cohesion  Improves maintainability
 Improving maintainability  escaped from hell 


NUGET: THE WAY OUT?
 NuGet is a tool for package management
 Facilitates searching & automates
installing, upgrading, uninstalling, creating & publishing
packages
 Encourages good practices: e.g. versioning & reuse of
components

 Tools should
 Just work
 Reduce friction
 Empower us & guide us to do the right thing

 NuGet is such a tool
 Not the answer to everything
 But excellent at guiding you to find a way out

HOW ABOUT FRICTION?!
 NuGet covers ~80% of typical needs
 Not only OSS needs!

 Scenarios
 Automation
 Automation
 Automation

 Most friction is caused by
 Not adhering to good ALM practices
 Not adhering to good technical design
 Lack of extensibility in / integration with other tools


VERSIONING
 Think about your versioning!
 Semantic versioning (semver.org)

Major Breaking changes
Minor Backwards compatible API
additions/changes
Patch Bugfixes not affecting the API

 NuGet is smarter when using SemVer
 Safe upgrades

 You can be smarter when using SemVer
 Anticipate breaking changes


VERSIONING
“Zookeepers must become Rangers” (Mark Seemann)
Non-negotiable deadline
“Big Bang Release”

Product

Component A

Component B

Component C

Time


A STORY OF CONSUMERS AND CONSUMABLES…

Consume packages Can consume packages

Typically do not produce packages
Consumer Consumables
Produce packages
Usually require installation / deployment


THE –FORCE IS STRONG IN THIS ONE…
“As software creators we don’t get to decide what
version of our tools / libraries that people use. If we
try to force them, our users will go somewhere
else.” (Rob Reynolds)
 As a package publisher
 Do NOT expect/force your consumers to always update to the latest version
 You can only hope they upgrade.

 As a result, dear package consumers:
 Do NOT auto-update packages!

Consuming any package update must be
a well-considered and human-made decision.


VERSIONING TAKE-AWAYS
 Be explicit!

 Breaking change?
 Clients decide when to upgrade!
 Introduce new version side-by-side & deprecate the old one

 Monitor & measure usage
 If you don’t know if it’s used, you can’t remove it


YOUR OWN NUGET REPOSITORY
 NuGet.org = public feed
 Privacy
 Intellectual property

 Solutions
 Local Folder / Network share
 NuGet.Server package
 NuGet Gallery
 MyGet.org


INSTALL-PACKAGE NUGET.SERVER


NUGET.SERVER LIMITATIONS
 Simple Implementation
 Only 1 feed per web application
 No granular security: 1 API key for all
 Minimal UI

 Conclusion:
 Something more useful requires development


NUGET-AS-A-SERVICE
 www.myget.org
 NaaS
 No installation: Register and off you go!
 Freemium
 Key Features for enterprise scenarios
 Granular security
 Private feeds (ADFS supported)
 Fine-grained permissions & an API key per user
 Integration with (private) SymbolSource repositories
 User & Quota management
 Repository management
 Package Retention Rules
 Package Promotion & Mirroring


CHANGE OF PERSPECTIVE

NuGet as a package
manager

NuGet as a protocol for
distributing packages


NUGET AS A PROTOCOL
 Distributing tools & software
 www.Chocolatey.org
 “Apt-Get” for Windows
 WebPI support

 Distributing Web sites
 www.OctopusDeploy.com
 Build results in .nupkg
 Octopus deploys to its tentacles
 Test/Staging/Production tentacles


A GLIMPSE AT THE NUGET ECO-SYSTEM

Develop

Build

Package

Share Network
Share

Collaborate

Deploy


CAUTION
 With great power comes great responsibility

 Package creators: behave!
 Componentize
 Version
 Minimal friction

 Package publishers: control!
 User permissions
 Repository contents

 Package consumers: validate!
 No auto-updates


OR IN CHICKEN TERMS…


LAST BUT NOT LEAST
 NuGet is OSS (Outercurve Foundation)

 Microsoft’s involvement
 Sponsors development
 Results in:
 Improved Visual Studio integration
 Increased adoption of NuGet

 Community involvement
 Contribute ideas, code, documentation!
 Share experiences, give feedback, submit issues
 Discuss: http://jabbr.net/#/rooms/nuget
 Package!


CONCLUSION

Dependencies & people are chickens
Deal with them! NuGet can help

NuGet is a tool
Improve your process! NuGet can help

Consumables vs Consumers
Improve your process! NuGet can help

NuGet as a package manager
NuGet as a protocol


http://www.xavierdecoster.com
@xavierdecoster

THANK YOU!
Questions?

Come get your MyGet stickers,
you might get lucky! 

Disclaimer: no chickens were hurt during the making of this presentation

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Organize your chickens - NuGet for the Enterprise

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Editor's Notes