$30 off During Our Annual Pro Sale. View Details »

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
630
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
450
The Kotlin Type Hierarchy From Top to Bottom
Avatar for Nat Pryce npryce
7
3.4k
What we talk about when we talk about software
Avatar for Nat Pryce npryce
3
410
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
700
Having Our Cake and Eating It
Avatar for Nat Pryce npryce
4
1.4k

Other Decks in Programming

See All in Programming
안드로이드 9년차 개발자, 프론트엔드 주니어로 커리어 리셋하기
Avatar for Seungmin 마량 maryang
1
110
The Past, Present, and Future of Enterprise Java
Avatar for ivargrimstad ivargrimstad
0
110
開発に寄りそう自動テストの実現
Avatar for Hiroki Iseri goyoki
2
1k
エディターってAIで操作できるんだぜ
Avatar for kis9a kis9a
0
730
テストやOSS開発に役立つSetup PHP Action
Avatar for Atsushi Matsuo matsuo_atsushi
0
160
re:Invent 2025 のイケてるサービスを紹介する
Avatar for maroon1st maroon1st
0
110
手が足りない！兼業データエンジニアに必要だったアーキテクチャと立ち回り
Avatar for zinkosuke zinkosuke
0
710
Microservices rules: What good looks like
Avatar for Chris Richardson cer
PRO
0
1.4k
20251212 AI 時代的 Legacy Code 營救術 2025 WebConf
Avatar for mouson(墨嗓) mouson
0
170
ゲームの物理 剛体編
Avatar for Fadis fadis
0
350
実はマルチモーダルだった。ブラウザの組み込みAI🧠でWebの未来を感じてみよう #jsfes #gemini
Avatar for n0bisuke n0bisuke2
2
1.1k
tsgolintはいかにしてtypescript-goの非公開APIを呼び出しているのか
Avatar for syumai syumai
7
2.2k

Featured

See All Featured
Distributed Sagas: A Protocol for Coordinating Microservices
Avatar for Caitie McCaffrey caitiem20
333
22k
RailsConf 2023
Avatar for Aaron Patterson tenderlove
30
1.3k
CSS Pre-Processors: Stylus, Less & Sass
Avatar for Bermon Painter bermonpainter
359
30k
Speed Design
Avatar for Sergey Chernyshev sergeychernyshev
33
1.4k
[SF Ruby Conf 2025] Rails X
Avatar for Vladimir Dementyev palkan
0
530
A Tale of Four Properties
Avatar for Chris Coyier chriscoyier
162
23k
The Art of Programming - Codeland 2020
Avatar for Erika Heidi erikaheidi
56
14k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
Avatar for Chris Coyier chriscoyier
508
140k
4 Signs Your Business is Dying
Avatar for Josh Pigford shpigford
186
22k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
Avatar for Eileen M. Uchitelle eileencodes
26
3.2k
Designing for Performance
Avatar for Lara Hogan lara
610
69k
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