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

Reengineering

Avatar for Nat Pryce Nat Pryce
January 22, 2017
Programming
0
190

 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
220
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
20250704_教育事業におけるアジャイルなデータ基盤構築
Avatar for Uchide Hiroki(ucchi-) hanon52_
5
790
Blazing Fast UI Development with Compose Hot Reload (droidcon New York 2025)
Avatar for Márton Braun zsmb
1
290
レベル1の開発生産性向上に取り組む − 日々の作業の効率化・自動化を通じた改善活動
Avatar for kesoji kesoji
0
220
なんとなくわかった気になるブロックテーマ入門/contents.nagoya 2025 6.28
Avatar for Chiaki Okamoto chiilog
1
270
Rubyでやりたい駆動開発 / Ruby driven development
Avatar for chobishiba chobishiba
1
730
プロダクト志向ってなんなんだろうね
Avatar for RightTouch righttouch
PRO
0
190
なぜ「共通化」を考え、失敗を繰り返すのか
Avatar for Rinchoku rinchoku
1
650
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
Avatar for Yuichi Maekawa kaelaela
10
5.3k
AIエージェントはこう育てる - GitHub Copilot Agentとチームの共進化サイクル
Avatar for Akira Kobori koboriakira
0
590
新メンバーも今日から大活躍！SREが支えるスケールし続ける組織のオンボーディング
Avatar for HonMarkHunt honmarkhunt
5
7.4k
Node-RED を（HTTP で）つなげる MCP サーバーを作ってみた
Avatar for High U highu
0
120
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
Avatar for Agata Naomichi agatan
1
420

Featured

See All Featured
Performance Is Good for Brains [We Love Speed 2024]
Avatar for Tammy Everts tammyeverts
10
950
Side Projects
Avatar for Sacha Greif sachag
455
42k
How to Ace a Technical Interview
Avatar for Jacob Kaplan-Moss jacobian
278
23k
Thoughts on Productivity
Avatar for Jon Yablonski jonyablonski
69
4.7k
The Cost Of JavaScript in 2023
Avatar for Addy Osmani addyosmani
51
8.5k
The Art of Delivering Value - GDevCon NA Keynote
Avatar for David Neal reverentgeek
15
1.5k
What’s in a name? Adding method to the madness
Avatar for Product Marketing Alliance productmarketing
PRO
23
3.5k
Being A Developer After 40
Avatar for Adrian Kosmaczewski akosma
90
590k
Principles of Awesome APIs and How to Build Them.
Avatar for Keavy McMinn keavy
126
17k
Code Review Best Practice
Avatar for Trisha Gee trishagee
69
18k
Adopting Sorbet at Scale
Avatar for Ufuk Kayserilioglu ufuk
77
9.5k
The Power of CSS Pseudo Elements
Avatar for Geoffrey Crofte geoffreycrofte
77
5.9k

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