Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Whoops! Where did my architecture go?
Search
Oliver Drotbohm
October 06, 2015
Programming
4
860
Whoops! Where did my architecture go?
Slides of the talk I gave at Java Forum Nord, 2015.
@springcentral
Oliver Drotbohm
October 06, 2015
Tweet
Share
More Decks by Oliver Drotbohm
See All by Oliver Drotbohm
It Takes Two to Tango – Designing Module Interactions in Modulithic Spring Applications
olivergierke
5
730
Bottom-Up Architecture – Bridging the Achitecture Code Gap
olivergierke
4
960
Spring Modulith – A Deep Dive
olivergierke
8
4.5k
Spring for the Architecturally Curious Developer
olivergierke
5
1.8k
Spring Boot 3 & Spring Framework 6
olivergierke
4
2k
Architecturally-evident Java Applications with jMolecules
olivergierke
9
2.9k
A Deep Dive into Spring Application Events
olivergierke
12
3.3k
Building Better Monoliths – Modulithic Applications with Spring Boot
olivergierke
4
970
Spring HATEOAS – Hypermedia APIs with Spring
olivergierke
1
760
Other Decks in Programming
See All in Programming
機能追加とリーダー業務の類似性
rinchoku
2
1.3k
2025 年のコーディングエージェントの現在地とエンジニアの仕事の変化について
azukiazusa1
24
12k
楽して成果を出すためのセルフリソース管理
clipnote
0
190
250830 IaCの選定~AWS SAMのLambdaをECSに乗り換えたときの備忘録~
east_takumi
0
400
Ruby×iOSアプリ開発 ~共に歩んだエコシステムの物語~
temoki
0
350
請來的 AI Agent 同事們在寫程式時,怎麼用 pytest 去除各種幻想與盲點
keitheis
0
130
Things You Thought You Didn’t Need To Care About That Have a Big Impact On Your Job
hollycummins
0
110
AWS発のAIエディタKiroを使ってみた
iriikeita
1
190
The Past, Present, and Future of Enterprise Java with ASF in the Middle
ivargrimstad
0
180
CJK and Unicode From a PHP Committer
youkidearitai
PRO
0
110
複雑なフォームに立ち向かう Next.js の技術選定
macchiitaka
2
240
testingを眺める
matumoto
1
140
Featured
See All Featured
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
358
30k
Automating Front-end Workflow
addyosmani
1370
200k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
18
1.1k
Side Projects
sachag
455
43k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
139
34k
Thoughts on Productivity
jonyablonski
70
4.8k
StorybookのUI Testing Handbookを読んだ
zakiyama
31
6.1k
Build The Right Thing And Hit Your Dates
maggiecrowley
37
2.9k
Faster Mobile Websites
deanohume
309
31k
Producing Creativity
orderedlist
PRO
347
40k
The Straight Up "How To Draw Better" Workshop
denniskardys
236
140k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
Transcript
Whoops! Where did my architecture go? Architecture management for Java
applications / olivergierke
None
None
Background Consulting years for SpringSource Lots of code reviews Eoin
Woods‘ talk on InfoQ Lot of input from fellows
"If you think architecture is expensive, try no architecture.
"Architecture is like weather: you can’t have none.
Macro VS. Micro Architecture
Macro VS. Micro Architecture
Orders Inventory Billing Macro-Architecture Micro-Architecture JMS REST AMQP
JRuby Java Scala Macro-Architecture Micro-Architecture AMQP JMS REST
Neo4j RDBMS MongoDB Macro-Architecture Micro-Architecture from Stefan Tilkov - Breaking
the Monolith JMS REST AMQP
Roadmap Divide and conquer Of layers and slices A plain
Java based approach
Architecture 101
Know your dependencies
Explicit / Visible dependencies
Granularity Modules Layers Vertical slices Subsystems
Granularity Java ARchive Package Class
Divide and conquer
Component Single unit to understand
Component Single unit to change
Component Scope of risk of change
B Smaller unit to understand A
B Reduced risk of change A
B Cost of separation A
B Definition and maintenance of dependencies A
"Meanwhile, in my friend’s project…
How do I add a feature?
How do I add a feature? New Feature © Eberhard
Wolff
Of layers and slices…
Presentation Service Data Access
Presentation Service Data Access Account Customer Core
Layers Well understood Known to developers Less important to business
Slices Hardly understood New to developers Key for business requirements
Presentation Service Data Access Account Customer Core
"How to implement an architecture inside a codebase?
Architecture VS. Codebase
"How to implement an architecture inside a codebase?
"How to implement an architecture inside a codebase?
"How to maintain an architecture inside a codebase?
Code analysis JDepend Sonarcube
Sonargraph Formerly known as SonarJ
Demo
A plain Java based approach
"How far can we get with plain Java means only?
Presentation Service Data Access Account Customer Core
Packages
….layer.slice ….slice.layer ….slice
….web.core ….service.core ….repository.core
….core.web ….core.service ….core.repository
….core ….customer ….account
"Why the f#$k should I even care?
"Does it make a difference?
Dependency management
"You only need to manage, what you can refer to…
Layers first Leaks slice internals Lower layers visible to everyone
Slices first/only Start with package per slice Expose interfaces and
domain types Keep implementations private
Slices first/only Encapsulates business module Internals understood anyway
"Start with less packages and the least visibility possible…
Presentation Service Data Access Account Customer Core
Presentation Service Data Access Account Customer Core
Demo
Take-aways Know your dependencies On every granularity Start as strict
as possible Get lenient where necessary
Resources Spring Data JPA @ GitHub Sonargraph jQAssistant Blogpost
Sample Code http://github.com/olivergierke/ whoops-architecture
Oliver Gierke Spring Data Project Lead
[email protected]
olivergierke www.olivergierke.de
Thanks & Credits Eoin Woods - Talk @ InfoQ Stefan
Tilkov - Talk @ InfoQ Eberhard Wolff - Slides @ Slideshare