Initiatives to Quantify and Track Technical Issues in Mobile Apps

Kazuhiro Hayashi (Yahoo! JAPAN / Development Division 1, Media Services Group, Media Group / Engineer)

https://tech-verse.me/ja/sessions/139
https://tech-verse.me/en/sessions/139
https://tech-verse.me/ko/sessions/139

Transcript

2. https://youtu.be/UEBHkLnrOHQ https://www.slideshare.net/techblogyahoo/yjtc18-c2-web-87239068 Yahoo! JAPAN Tech Conference 2018 Yahoo! JAPAN Tech Conference 2021 Self-Introduction - Worked as a iOS app KURO-OBI (Black-belt) (2017-2020) - Presented at tech conferences in 2018 and 2021(Japanese) - iOS app developer in Yahoo! JAPAN
3. Target audience - People who work with members of various occupations who do not communicate directly - People who want to eliminate technical debt systematically - People who can't grasp all the code and are developing apps with a large team
4. Overview - Introducing the team's efforts to improve technology on the Yahoo JAPAN app for iOS - Introduction of what kind of points I keep in mind while continuing those efforts - If the organization is large, technical improvement will not scale due to individual motivation alone
5. Yahoo! JAPAN for iOS (Photos: aflo)
7. Project structure (2022)
8. Related Talk Day 2 18:00 - 19:00 JST Operation and Quantitative Visualization of Kanban and XP on Yahoo! JAPAN Top Page
9. Technical debt
10. Technical debt - More and more ad hoc code - Old APIs and languages continue to be used - The code becomes complicated due to the hands of many people
11. We need to eliminate technical debt… - Continuously - As a team
12. Agenda - Case Study 1 : Multi-modularization - Case Study 2 : SwiftUI introduction - Patterning these approach
13. Agenda - Case Study 1 : Multi-modularization - Case Study 2 : SwiftUI introduction - Patterning these approach
14. monolithic project Multi-module project Framework Framework Framework .swift .swift .swift .swift .swift .swift .swift .swift .swift .swift .swift .swift
15. Trivialize the value of technology
16. Messages in the team - Modularization allows more time for development - The above is self-explanatory - Multi-modularization speeds up each build and test execution time
17. Trivialize the value of technology - Benefits can be clearly communicated to non-developers - Reassure others by telling them that work is progressing - You can easily build a measurement system - You can motivate team members
18. Decide what to measure take measurements
19. Build In Logs/Build/ Measurement target
21. Dev Server √∫≈
22. Build Time Dashboard
23. Average weekly build time
24. Before Multi-module
25. After Multi-modularization
26. New iOS released
27. 5FSN %JTUSJCVUJPO
    PG
    UJNF
    TQFOU
    QFS
    CVJME 1FSDFOUBHF
    PG
    DPNQMFUJPOT
    XJUIJO
    
    TFD  Average weekly build time   After Multi-modularization   New iOS released 
28. Trivialize the value of technology
29. Agenda - Case Study 1 : Multi-modularization - Case Study 2 : SwiftUI introduction - Patterning these approach
31. Turn my goals into benefits for our organization - Trivialize the value of technology - Make indicators measurable by date and time - Rephrase the benefits to what they are for another platform or designer
32. https://note.com/designers_story/n/nbfbb73828616 (Japanese)
34. https://techblog.yahoo.co.jp/entry/20191203785540/ (Japanese)
35. iOS Android Web Design X X X
36. Trivialize the value of technology - Evaluated by number of steps - Replace UIKit source code with SwiftUI one-by-one
37. XIB SwiftUI
38. Report UI component replacement Visualize how many steps have been reduced Explain that they contribute to development efficiency
40. How many steps have been reduced? 60% reduced
41. Agenda - Case Study 1 : Multi-modularization - Case Study 2 : SwiftUI introduction - Patterning these approach
42. Trivialize the value of technology
43. Trivialize the value of technology - Benefits can be clearly communicated to non-developers - Reassure others by telling them that work is progressing - You can easily build a measurement system - You can motivate team members
44. Trivialize the value of technology Decide What to mesure Explain that they contribute to development efficiency Take measurements
45. https://speakerdeck.com/kazuhiro4949/da-qi-ye-falsezui-qian-xian-dekodowoshu-kisok-kerutameniyatutekitakoto (Japanese) What I've been doing to keep writing code at the forefront of large companies
46. Thank you