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
April 05, 2013
Programming
2
380
Whoops! Where Did My Architecture Go?
Slides of my talk at BEDCon 2013 in Berlin, Germany.
Oliver Drotbohm
April 05, 2013
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
680
Bottom-Up Architecture – Bridging the Achitecture Code Gap
olivergierke
4
920
Spring Modulith – A Deep Dive
olivergierke
8
4.4k
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
960
Spring HATEOAS – Hypermedia APIs with Spring
olivergierke
1
750
Other Decks in Programming
See All in Programming
イベントストーミング図からコードへの変換手順 / Procedure for Converting Event Storming Diagrams to Code
nrslib
2
840
VS Code Update for GitHub Copilot
74th
2
650
設計やレビューに悩んでいるPHPerに贈る、クリーンなオブジェクト設計の指針たち
panda_program
6
2.1k
Claude Code + Container Use と Cursor で作る ローカル並列開発環境のススメ / ccc local dev
kaelaela
10
5.4k
すべてのコンテキストを、 ユーザー価値に変える
applism118
3
1.3k
High-Level Programming Languages in AI Era -Human Thought and Mind-
hayat01sh1da
PRO
0
780
#kanrk08 / 公開版 PicoRubyとマイコンでの自作トレーニング計測装置を用いたワークアウトの理想と現実
bash0c7
1
770
10 Costly Database Performance Mistakes (And How To Fix Them)
andyatkinson
0
350
AI時代の『改訂新版 良いコード/悪いコードで学ぶ設計入門』 / ai-good-code-bad-code
minodriven
16
6.5k
チームで開発し事業を加速するための"良い"設計の考え方 @ サポーターズCoLab 2025-07-08
agatan
1
430
PHPで始める振る舞い駆動開発(Behaviour-Driven Development)
ohmori_yusuke
2
390
ニーリーにおけるプロダクトエンジニア
nealle
0
840
Featured
See All Featured
Building Applications with DynamoDB
mza
95
6.5k
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
Practical Orchestrator
shlominoach
189
11k
GraphQLとの向き合い方2022年版
quramy
49
14k
Why Our Code Smells
bkeepers
PRO
336
57k
GraphQLの誤解/rethinking-graphql
sonatard
71
11k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.7k
Building Flexible Design Systems
yeseniaperezcruz
328
39k
VelocityConf: Rendering Performance Case Studies
addyosmani
332
24k
Java REST API Framework Comparison - PWX 2021
mraible
31
8.7k
Designing for humans not robots
tammielis
253
25k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
251
21k
Transcript
Whoops! Where did my architecture go? Approaches to architecture management
for Java and Spring applications Oliver Gierke
Oliver Gierke SpringSource Engineer Spring Data
[email protected]
olivergierke www.olivergierke.de
Background 5 years of consulting Lots of code reviews Eoin
Woods‘ talk on InfoQ
"If you think architecture is expensive, try no architecture.
Macro VS. Micro Architecture
Macro VS. Micro Architecture
Sample Code http://github.com/olivergierke/ whoops-architecture
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
Component Single unit to understand
Component Single unit to change
Component Scope of risk of change
B A
B A
B Cost of separation A
B Definition and maintenance of dependencies A
B Smaller unit to understand A
B Reduced risk of change A
Of layers and slices…
None
None
Presentation Service Data Access
Presentation Service Data Access
Presentation Service Data Access
Presentation Service Data Access Account Customer Core
Presentation Service Data Access Account Customer Core
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 req
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 Sonar
Demo
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 Blogpost
Thanks & credits Eoin Woods - Talk @ InfoQ Uwe
Friedrichsen - Slides @ Slideshare