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• twitter.com– @lennybacon
Daniel Fisher
danielfisher.com
EFFICIENT COMMUNICATION…
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No more monoliths
https://www.flickr.com/photos/senorwences/2366892425
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https://www.flickr.com/photos/inju/2647397230
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Change must be cheap
https://www.flickr.com/photos/smull/432813187
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Feedback must be fast
https://www.flickr.com/photos/thatguyfromcchs08/2300190277
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Component-based software engineering is a branch
of software engineering that emphasizes the
separation of concerns in respect of the wide-ranging functionality available throughout a
given software system.
http://en.wikipedia.org/wiki/Component-based_software_engineering
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It is a reuse-based approach to defining,
implementing and composing loosely coupled independent components into systems.
This practice aims to bring about an equally wide-ranging degree of
benefits in both the short-term and the
long-term for the software itself and for
organizations that sponsor such software.
http://en.wikipedia.org/wiki/Component-based_software_engineering
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Sorry this is *NO hot shit*!
The idea first became prominent with
Douglas McIlroy at the NATO conference on software
engineering in Garmisch, Germany,
1968
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http://enterprisecraftsmanship.com/2015/01/10/how-to-build-microservices-wrong
What about micro services?
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Don't reinvent the wheel!
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‘Nuf bla bla!
So what’s a component?
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https://www.flickr.com/photos/64693712@N05/8059145606
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Divide and Conquer
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Separation of ConcernsSingle Responsibility
…Clean Code
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https://www.flickr.com/photos/lynsey_wells83/11054897226
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https://www.flickr.com/photos/miasone/8741413785
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Explicit boundariesAutonomous
Shared schema and contractCompatibility through Policy
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Ensure separation
• Ndepend– http://www.ndepend.com/
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Component Component Component
Domain ServicesDomain Objects
APIAPI
DD
DTE
C
Layers
Value Objects
Aggregate Root
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The only thing
really hard is making things
really easy
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https://www.flickr.com/photos/shardayyy/5711563136
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Dependencies
Core
Directory
Data
DataModel Diagnostics
ComponentModel
DataModel.Data
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https://www.flickr.com/photos/archivesnz/8759939806
Source Control Repositories
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Branch Strategy
Branch for stability Commit for stability
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Usual Repository
Class Library Test Sample Class Library
Class LibrarySample Test Test
Class Library Test Sample Class Library
Class LibraryExecutableSample Class Library
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Component Repository
Class Library Test Sample
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Pros
• You just work with what you need• Separation of concerns from the
beginning
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Cons
• There will be lots of repositories• There will be multiple histories/logs
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Consequences
• The need for a flexible SCM• Aggregated feeds of history/logs
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Flexible version control
• GIT
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Tests
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Pros
• You only see and maintain relevant tests
• Feedback is delivered faster
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Cons
• Any?
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Consequences
• You need to change the way you did it before?
danielfisher.comMonolith solution or too many
tests?
• NCrunch.NET– http://www.ncrunch.net/
• Wallaby.JS– http://wallabyjs.com/
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© Daniel Fisher
Builds
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Builds
• A project consist of multiple builds– Per branch?
• Check-In• Nightly• Feature• Team• Release
It really depends on your business strategy and team organization!
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Pros
• Build can be parallelized• Feedback is delivered faster• You see where it breaks
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Cons
• There will be lots of builds• There will be even more build results
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Consequences
• Build Process that supports build trees– https://
en.wikipedia.org/wiki/Topological_sorting
• Aggregated overview of build results
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Build Servers
• Good question!
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SOS…
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Build Scripts
https://www.flickr.com/photos/frf_kmeron/3587872772
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Build ProcessCh
ecko
ut-S
ourc
es
Gen
erat
e-Co
de
Set-
Vers
ion
Com
pile
-Cod
e
Reso
lve-
Dep
ende
ncie
s
Sign
-Out
put
Pack
age-
Out
put
Publ
ish-
Pack
age
Anal
yze-
Out
put
Doc
umen
t-O
utpu
t
Test
-Out
put
Dep
loy-
Pack
age
Test
-Dep
loym
ent
Test
-Inte
grati
on
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Rake, Fake, Workflow
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IMHO
• Until you don't build value by writing build scripts avoid it
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Package Publication
https://www.flickr.com/photos/leshaines123/5422165409
danielfisher.comLatest & Greatest vs. Old &
Conservative
https://www.flickr.com/photos/thomasletholsen/11139022726
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Package Publication
• NuGet• NPM• Bower• …
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Pros
• Orchestration of releases
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Cons
• Maintenance of multiple Package Repositories?
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Bug Tracking
https://www.flickr.com/photos/goingslo/4523034319
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Software is not for itself!
• A Bug Tracker for each Product– A category/tag for each project
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Roadmap
https://www.flickr.com/photos/aigle_dore/5849712695
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Software is not for itself!
• A Feature plan for each Product– A category/tag for each project
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Versions
https://www.flickr.com/photos/jasonmichael/5396824640
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Software is not for support!
• One version number per Product for each Project
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READ LENNYBACON.COMFOLLOW @LENNYBACON
LINK LINKEDIN.COM/IN/LENNYBACONXING XING.COM/PROFILE/DANIEL_FISHERFRIEND FB.COM/DANIEL.FISHER.LENNYBACONMAIL [email protected] +49 (176) 6159 8612
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