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
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
620
Developer Joy - The New Paradigm
Avatar for Holly Cummins hollycummins
1
340
Leading Effective Engineering Teams in the AI Era
Avatar for Addy Osmani addyosmani
7
570
The Past, Present, and Future of Enterprise Java
Avatar for ivargrimstad ivargrimstad
0
560
What's new in Spring Modulith?
Avatar for Oliver Drotbohm olivergierke
1
160
CSC305 Lecture 08
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
270
Writing Better Go: Lessons from 10 Code Reviews
Avatar for Konrad Reiche konradreiche
3
5.7k
Vueのバリデーション、結局どれを選べばいい？ ― 自作バリデーションの限界と、脱却までの道のり ― / Which Vue Validation Library Should We Really Use? The Limits of Self-Made Validation and How I Finally Moved On
Avatar for ねぎなす neginasu
1
150
bootcamp2025_バックエンド研修_WebAPIサーバ作成.pdf
Avatar for GENIEE ,Inc geniee_inc
0
120
技術的負債の正体を知って向き合う
Avatar for irof irof
0
230
All About Angular's New Signal Forms
Avatar for Manfred Steyer manfredsteyer
PRO
0
200
contribution to astral-sh/uv
Avatar for Shunsuke Tsuchiya shunsock
0
450

Featured

See All Featured
XXLCSS - How to scale CSS and keep your sanity
Avatar for Zaharenia Atzitzikaki sugarenia
249
1.3M
The Pragmatic Product Professional
Avatar for Laura Van Doore lauravandoore
36
7k
KATA
Avatar for Megan Lloyd mclloyd
PRO
32
15k
Sharpening the Axe: The Primacy of Toolmaking
Avatar for Bryan Cantrill bcantrill
46
2.5k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
Avatar for Eileen M. Uchitelle eileencodes
37
2.6k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
Avatar for Dan Newman danielanewman
230
22k
How to Think Like a Performance Engineer
Avatar for Harry Roberts csswizardry
27
2.1k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
Avatar for Sam Stephenson sstephenson
162
15k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
Avatar for Morgane Peng morganepeng
132
19k
GraphQLの誤解/rethinking-graphql
Avatar for sonatard sonatard
73
11k
Practical Orchestrator
Avatar for Shlomi Noach shlominoach
190
11k
Distributed Sagas: A Protocol for Coordinating Microservices
Avatar for Caitie McCaffrey caitiem20
333
22k

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