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Reclaim your architecture @ sbonrails
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shagemann
February 12, 2014
Technology
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Reclaim your architecture @ sbonrails
The slides of my February 12, 2014 talk at Santa Barbara on Rails
shagemann
February 12, 2014
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Transcript
Reclaim your architecture Stephan Hagemann
Rails developers?
STEPHAN GERMAN GERMANY BOULDER ROCK CLIMBING WHITE MALE NETHERLANDS CYCLING
DIVING CONSULTANT RUBY RAILS GO XING PIVOTAL LABS
None
None
Labeling in Software development
No Rails app starts with a namespace
All gems start with a namespace
Rails Gems
AEH FACE Rails Gems
! ! ! ! ! ! ! ! ! +
active record + active support + action controller Rails Gems
How can you tell what still belongs?
None
Try this! ! Namespace everything in your next app
Give yourself a box so you can start thinking outside
of it
Can you prove small chunks?
Growing size
Exploding complexity SIZE POSSIBLE INTERACTIONS
Effect of structure VS
SIZE POSSIBLE INTERACTIONS Reduced exploding complexity
Slashing complexity SIZE COMPLEXITY SPLIT!
Making chunks early SIZE COMPLEXITY SPLIT!
Net win? SIZE COMPLEXITY SPLIT! $ $
You’re going to do it often SIZE DOUBLE SPLIT! COMPLEXITY
NEW CODE IN ENGINE NEW CODE IN ENGINE
Never build large apps to build large apps
github.com/shageman/ the_next_big_thing
5 looser coupling 3 gems 1 one app 4 engines
8 HTTP SOA 2 modules 7 eco-system 6 services
1 The one app
HTTP://WWW.FLICKR.COM/PHOTOS/WIDNR/6589525327/
Examples ! diaspora, CF CC, canvas
If you are in the situation where you’re reading some
text, investigating, trying to figure out what is going on... That is a very good property of a detective novel and a very bad property of code. ! Martin Fowler
ANNOYANCE ENTRY STRUCTURE
2 The modularized app
HTTP://EECUE.COM/P/31426/METAL-RECYCLING-YARD.HTML
+ A higher level structure
ANNOYANCE EMAIL SIGNUP STRUCTURE
3 The gem component app
None
+ Provable independence
Choose modules that tell the story of the system and
contain a cohesive set of concepts Eric Evans
None
HTTP://WWW.SMASHINGMAGAZINE.COM/INFORMATION-AND-INSTRUCTIONAL-SIGNS-PART-1/
ANNOYANCE EMAIL SIGNUP STRUCTURE
4 The Rails component app
None
+ Provable independence for Rails
Rails Engines
EMAIL SIGNUP TEASER STRUCTURE ANNOYANCE
5 The loosely-coupled app
None
+ Clearer responsibilities
EMAIL SIGNUP TEASER STRUCTURE ANNOYANCE EVENT COUNTER
6 The service-oriented app
None
+ Reduced surface area
588 194 LOGGER::COUNT EVENTCOUNTER::*.METHODS.COUNT LOGGER 361 115
588 194 LOGGER::COUNT EVENTCOUNTER::*.METHODS.COUNT LOGGER 361 115 - OBJECT.METHODS LOGGER::COUNT
LOGGER 394 0 247 1
EMAIL SIGNUP TEASER STRUCTURE ANNOYANCE EVENT COUNTER
7 The eco-system app
None
gem build event_counter..
gem push event_counter..
None
EMAIL SIGNUP TEASER STRUCTURE ANNOYANCE EVENT COUNTER
8 The HTTP SOA app
PICTURE HERE
STRUCTURE EMAIL SIGNUP TEASER ANNOYANCE EVENT COUNTER
5 looser coupling 3 gems 1 one app 4 engines
8 HTTP SOA 2 modules 7 eco-system 6 services
5 looser coupling 3 gems 1 one app 4 engines
8 HTTP SOA 2 modules 7 eco-system 6 services
9 Architecture the reclaimed years
None
HTTP://WWW.CONFREAKS.COM/VIDEOS/759-RUBYMIDWEST2011-KEYNOTE- ARCHITECTURE-THE-LOST-YEARS
None
None
None
None
well, we just did that
EMAIL SIGNUP TEASER STRUCTURE ANNOYANCE EVENT COUNTER
Thanks! Stephan Hagemann @shageman
[email protected]