Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Reengineering

Avatar for Nat Pryce Nat Pryce
January 22, 2017
Programming
0
200

 Reengineering

A case study presented to 4th year students at Imperial College

Avatar for Nat Pryce

Nat Pryce

January 22, 2017
Tweet

More Decks by Nat Pryce

See All by Nat Pryce
Mistakes we made adopting event sourcing (and how we recovered)
Avatar for Nat Pryce npryce
3
1.1k
Failure is not an Option. Error handling strategies for Kotlin programs
Avatar for Nat Pryce npryce
0
620
Taking the Tiger by the Tail, P3X 2019
Avatar for Nat Pryce npryce
1
230
What we talk about when we talk about software, Agile Turkey Summit 2019
Avatar for Nat Pryce npryce
2
440
The Kotlin Type Hierarchy From Top to Bottom
Avatar for Nat Pryce npryce
7
3.3k
What we talk about when we talk about software
Avatar for Nat Pryce npryce
3
400
Why software changes & how we must change what we change when we change software
Avatar for Nat Pryce npryce
1
300
What we talk about when we talk about software
Avatar for Nat Pryce npryce
1
690
Having Our Cake and Eating It
Avatar for Nat Pryce npryce
4
1.4k

Other Decks in Programming

See All in Programming
alien-signals と自作 OSS で実現する フレームワーク非依存な ロジック共通化の探求 / Exploring Framework-Agnostic Logic Sharing with alien-signals and Custom OSS
Avatar for aose aoseyuu
2
610
What Spring Developers Should Know About Jakarta EE
Avatar for ivargrimstad ivargrimstad
0
470
Developer Joy - The New Paradigm
Avatar for Holly Cummins hollycummins
1
360
Software Architecture
Avatar for Henning Schwentner hschwentner
6
2.3k
monorepo の Go テストをはやくした〜い！~最小の依存解決への道のり~ / faster-testing-of-monorepos
Avatar for convto convto
2
540
スキーマ駆動で、Zod OpenAPI Honoによる、API開発するために、Hono Takibiというライブラリを作っている
Avatar for N Akita nakita628
0
320
20251016_Rails News ～Rails 8.1の足音を聴く～
Avatar for Masato Mori morimorihoge
3
730
Claude CodeによるAI駆動開発の実践 〜そこから見えてきたこれからのプログラミング〜
Avatar for 入井 啓太 iriikeita
0
330
3年ぶりにコードを書いた元CTOが Claude Codeと30分でMVPを作った話
Avatar for 小島舞子 / Maiko Kojima maikokojima
0
630
The Past, Present, and Future of Enterprise Java
Avatar for ivargrimstad ivargrimstad
0
460
NIKKEI Tech Talk#38
Avatar for cipepser cipepser
0
220
One Enishi After Another
Avatar for Koji SHIMADA snoozer05
PRO
0
160

Featured

See All Featured
Performance Is Good for Brains [We Love Speed 2024]
Avatar for Tammy Everts tammyeverts
12
1.2k
How to train your dragon (web standard)
Avatar for Monica Dinculescu notwaldorf
97
6.3k
Into the Great Unknown - MozCon
Avatar for Noah Learner thekraken
40
2.1k
Stop Working from a Prison Cell
Avatar for Chris Michel hatefulcrawdad
272
21k
Rails Girls Zürich Keynote
Avatar for Gregor Martynus gr2m
95
14k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
Avatar for Tammy Everts tammyeverts
10
610
Designing Experiences People Love
Avatar for Jonathan Moore moore
142
24k
Build your cross-platform service in a week with App Engine
Avatar for Jose L jlugia
233
18k
We Have a Design System, Now What?
Avatar for Morgane Peng morganepeng
53
7.8k
Become a Pro
Avatar for Speaker Deck speakerdeck
PRO
29
5.6k
Unsuck your backbone
Avatar for Amy Palamountain ammeep
671
58k
How To Stay Up To Date on Web Technology
Avatar for Chris Coyier chriscoyier
791
250k

Transcript

  1. Reengineering Evolution, Devolution & Revolution Nat Pryce @natpryce | natpryce.com

    | [email protected]

  2. Quoting

  3. Grand vision APAC EMEA US

  4. Original architecture

  5. Attempted optimisation

  6. Parallelise calculations for APAC APAC EMEA

  7. Start refactoring, but don't finish APAC EMEA

  8. A new feature for EMEA APAC EMEA

  9. Reports for APAC APAC EMEA

  10. Diagnosing problems

  11. The system was modelled on a manual, paper-based process

  12. Idealised architecture

  13. Separate the projects

  14. "Cuckoo's Egg" application behind gateway

  15. HTTP data service "simplicators"

  16. "Pregression" tests

  17. Fake simplicators in system tests

  18. Introduce an acceptance test driven process

  19. Replace the GUI with a web application

  20. Continual indicative quoting is just a client

  21. Caching proxies for performance and scaling

  22. None

  23. Lines of Code Over Time