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- 2. Regional Scrum Gathering® Shanghai 2014 @juvenxu! http://www.juvenxu.com Programmer & Agile Coach
- 3. Extreme Programming (XP) is a software development methodology which is intended to improve software quality and responsiveness to changing customer requirements. Regional Scrum Gathering® Shanghai 2014
- 4. Regional Scrum Gathering® Shanghai 2014
- 5. Kent Beck! Martin Fowler! James Shore! Ron Jeffries! … Regional Scrum Gathering® Shanghai 2014
- 6. Do You Remember The Values? Regional Scrum Gathering® Shanghai 2014
- 9. How Do We Follow The Values? Here is our story… Regional Scrum Gathering® Shanghai 2014
- 10. A product supporting alibaba.com & aliexpress.com Regional Scrum Gathering® Shanghai 2014
- 11. 5000 query per second & 500MB network traffic at peak Regional Scrum Gathering® Shanghai 2014
- 12. • We have 3 people for all business analysis, architecture, coding, testing work, and some operation work.! ! • High availability is a must, our service down almost means sites down.! ! • Business keeps growing, which means new requirements coming and users growing. Challenges Regional Scrum Gathering® Shanghai 2014
- 13. simplicity (￣口￣)!! ! 19 svn repositories for 1 project? ! Are you serious? Regional Scrum Gathering® Shanghai 2014
- 14. simplicity Let’s follow the industry standard. Regional Scrum Gathering® Shanghai 2014
- 15. • Much less learning costs — imagine when programmers grows 2x in 1 year! ! • No need to invest on customizing tools ! ! • Much easier to use open source tools Follow The Convention, Keep It Simple Regional Scrum Gathering® Shanghai 2014
- 16. We need streamed file download support! In 2 weeks! The Way Requirements Usually Comes: Regional Scrum Gathering® Shanghai 2014
- 17. The Way We Usually React: Ok, let’s do it. (god knows how much time it takes) Ok, let’s do it, but we need 2 months. Sorry, don’t you see I’m already very busy? Regional Scrum Gathering® Shanghai 2014
- 18. communication Why you need streamed file download support? We need to play audios and videos. In what scenario you need this feature? We have mobile users, they want to send audios and videos. Mobiles users, hmm… what is the size of the audios/videos? Let me think, … 5mb at most, usually no more than 2 mb. Then you don’t need streamed file download, just download it and play it locally. Regional Scrum Gathering® Shanghai 2014 respect our customers
- 19. • Think code as the last way to solve a problem more code == more code to maintain more feature == more complex more complex == less stable more complex == harder to change simplicity Regional Scrum Gathering® Shanghai 2014
- 20. Regional Scrum Gathering® Shanghai 2014
- 21. Regional Scrum Gathering® Shanghai 2014
- 22. Regional Scrum Gathering® Shanghai 2014 • TDD, CI, ATDD/BDD, Pair are great for getting feedback.! ! • But we need more, mainly from Ops point of view.
- 23. Regional Scrum Gathering® Shanghai 2014 user’s behaviour
- 24. Regional Scrum Gathering® Shanghai 2014 availability of our dependency
- 25. Regional Scrum Gathering® Shanghai 2014 img cluster img-compress cluster fileserver2-content cluster task: merge 2 clusters • For saving network traffic (>3GB/s) and machines (>30 4core VM)! • Legacy code with 100+ apache regex url rewrite rules! • Service must not get down during migration.
- 26. Regional Scrum Gathering® Shanghai 2014 courage LETS DO IT! We have the because: • We believe it’s valuable.! • We spend days parsing real access log and from which make many test cases.! • We use canary deployment to minimize risks. respect our users