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
Developer Joy - The New Paradigm
Avatar for Holly Cummins hollycummins
1
340
Introduce Hono CLI
Avatar for Yusuke Wada yusukebe
6
3k
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
320
バッチ処理を「状態の記録」から「事実の記録」へ
Avatar for HideyukiKitao panda728
PRO
0
180
CSC305 Lecture 09
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
300
Six and a half ridiculous things to do with Quarkus
Avatar for Holly Cummins hollycummins
0
210
CSC509 Lecture 06
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
260
Server Side Kotlin Meetup vol.16: 内部動作を理解して ハイパフォーマンスなサーバサイド Kotlin アプリケーションを書こう
Avatar for ternbusty ternbusty
3
230
What Spring Developers Should Know About Jakarta EE
Avatar for ivargrimstad ivargrimstad
0
390
『毎日の移動』を支えるGoバックエンド内製開発
Avatar for yutautsugi yutautsugi
2
270
CSC509 Lecture 08
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
230
デミカツ切り抜きで面倒くさいことはPythonにやらせよう
Avatar for aokirishima aokswork3
0
260

Featured

See All Featured
Building Flexible Design Systems
Avatar for Yesenia Perez-Cruz yeseniaperezcruz
329
39k
Leading Effective Engineering Teams in the AI Era
Avatar for Addy Osmani addyosmani
7
570
ピンチをチャンスに：未来をつくるプロダクトロードマップ #pmconf2020
Avatar for Aki / @LoveIdahoBurger aki_iinuma
127
54k
For a Future-Friendly Web
Avatar for Brad Frost brad_frost
180
10k
The Web Performance Landscape in 2024 [PerfNow 2024]
Avatar for Tammy Everts tammyeverts
10
880
The Cult of Friendly URLs
Avatar for Andy Hume andyhume
79
6.6k
Optimizing for Happiness
Avatar for Tom Preston-Werner mojombo
379
70k
RailsConf 2023
Avatar for Aaron Patterson tenderlove
30
1.3k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
Avatar for Chris Coyier chriscoyier
508
140k
Put a Button on it: Removing Barriers to Going Fast.
Avatar for kastner kastner
60
4k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
Avatar for Dan Newman danielanewman
230
22k
Building an army of robots
Avatar for Kyle Neath kneath
306
46k

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