Observatio

My talk at the may PHP Amersfoort meetup

Transcript

3. Observatio Learn from our mistakes
5. Why should you believe me? • Started > 14 years ago (PHP4!) • PHP7 soon™ • 1 codebase, 2.5MLOC of PHP, 6.5MLOC in total • > 1500 customers, > 20k websites, > 800k users • 4M requests per hour • 2 Server racks @True • 4 years of scrum, 5 teams • Plenty of room for mistakes
6. What will we be talking about? • Doing the right thing • Doing things right • Doing things a little bit better every time
7. Doing the right thing Requirements
8. A story 1. Doing the right thing
9. The user must be able to export gifts 1. Doing the right thing
10. Meet Mark the marketing manager! 1. Doing the right thing
11. As Mark the marketing manager, I want to export gifts, so that I can send a mailing 1. Doing the right thing
12. As Mark the marketing manager, I want to send a mail to customers with a big account, so I can tell them how we used their gifts to improve the world 1. Doing the right thing
13. As Mark the marketing manager, I want to tell customers with a big account how we used their gifts to improve the world, so they know they made a difference 1. Doing the right thing
14. Meet Claire the big spender customer! 1. Doing the right thing
15. As Claire the big spender customer, I want to know how my gift helped improve the world, so I know I made a difference 1. Doing the right thing
16. P S S 1. Doing the right thing
17. P S S S S S S S S S S Export 2pt to create 2h/w to operate 1. Doing the right thing Automated mailing 5pt to create 0h/w to operate
19. When writing stories • Ask ‘why’ at least five times • Whom does the problem or opportunity really concern? • Forget must and want; problems and opportunities • Stories are not about tech or money • Stories are about the domain, in terms of the domain • Persona’s are hard; use data • Estimates are hard; don’t overthink 1. Doing the right thing
20. When solving stories • Stories are the beginning of a conversation • Sprint planning is for picking solutions • ... but nothing is set in stone • Is your Product Owner there? 1. Doing the right thing
21. Doing things right Craftsmanship
22. 2. Doing things right
23. 2. Doing things right
24. Who is your audience? 2. Doing things right
25. Don’t let it come this far
26. 2. Doing things right
27. 2. Doing things right
28. Bad code should hurt your eyes 2. Doing things right
29. Imitatio and emulatio 2. Doing things right
30. Patience and humility
31. Doing things better AKA Continuous improvement
32. Seven steps for beginners (like me) In 25 minutes: • Create/update and prioritize your to-do list • Write your commit message • Make it work • Commit • Make it beautiful • Commit • Cross off item from to-do list Rinse and repeat 3. Doing things better
33. Feature branches 3. Doing things better
34. 3. Doing things better
35. Code reviews 3. Doing things better
36. Pair programming © Esti Alvarez
37. Lightning talks 3. Doing things better
38. 3. Doing things better
39. Concluding So what have we learned, really?
41. Thank you! Procurios www.procurios.com @Procurios @ProcuriosDev Pim Elshoff @pelshoff https://joind.in/talk/db568