Mobile App Development for Perl Mongers

A talk about Client-Fontend and Client-Backend on YAPC::Asia 2014

Transcript

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32. Client-Backend Engineering Fuji, Goro Cookpad Inc. Mobile Application Development for Perl Mongers YAPC::Asia 2014, Tokyo, 2014/8/30
33. @__gfx__ • A client-backend engineer • Working on libraries, environments, and CI on both Android and iOS apps • As a CPAN author: Data::Validator, Text::Xslate • Loving Android Studio and AppCode
36. The number of monthly users 0M 3.6M 7.2M 10.8M 14.4M 18M Jul Oct Jan Apr Jul Oct Jan Apr PC Smartpohone browsers Smartpohone apps Feature phones Others 44.04 million ʢAs of April 2014ʣ
37. The number of installations iOS 1,010m Android 990m ʢAs of April 2014ʣ
38. How Mobile Application Development Runs
39. A long time ago in a galaxy far, far away…
40. Lots of problems • Communication cost: • service teams <~> mobile app team • Different release cycle: • web: 10/day • app: 2/month • The will of installations • Each user sees a random version of apps • Continuous integration is really difficult
41. How our mobile teams were • Cookpad started as a web service • Cookpad mobile apps had followed the web • Service teams were tend to order the new features to the mobile app team (web-first)
42. Lots of good problems ;)
43. Communication Cost
44. Before “Mobile First” Era
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48. Our Adventure Has Just Begun
49. Release Cycle
50. Web and Mobile Apps • Cookpad has a successful workflow: continuous delivery • Mobile app development should be successful with the same way!
52. Defects Rise No rollbacks
53. Differences in Release Cycle • Web: • continuous delivery • easily rollbacks code on problems • App: • frequent release makes users irritated • no rollbacks; all the versions remain in the world
54. Different release cycle should make different workflow
55. Branching Model • Web: github-flow • Keeps the master branch deployable • App: git-flow • Makes a release branch on code freeze
56. Pull-Request Development • All the changes are merged via pull requests • Do not commit changes to master directly • All the pull requests should be reviewed
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58. The Principle: KISS ! but not to be too simple
59. Continuous Integration w #VJME
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61. Release Engineering Tasks • Kicks the Jenkins job for a release package • Builds it, lints it, tests it, makes a tag • Uploads the package to Google Play / AppStore • Writes recent changes • Publishes it (in iOS: after Apple reviewing)
62. Too Many Tasks in Releng
63. Release Engineering as Code • External repositories that build app projects • Android Publisher API (Google Play Developer API) • No API on AppStore / iTunes Connect yet • Monitoring - not yet, but will try
64. That’s all.
65. We are hiring ;) • There are a lot of good problems in Cookpad!
66. Free Talks: YAPC.fm • How to test mobile apps? • How about IDE / programming languages? • What to learn from the Perl community?