実録LINEスタンププレミアム開発の現場 / Development for LINE Sticker Premium

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࣮࿥-*/&ελϯϓϓϨϛΞϜ։ൃͷݱ৔ LINE Fukuoka ։ൃ1ࣨ ஛Լ लଇ 2020/05/22 LINE Developer Meetup #63

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ࣗݾ঺հ • LINE Fukuoka - LINE client νʔϜ Engineering Manager • @taketin

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ΞδΣϯμ • ஍ํϒϥϯνͰ͋Δ LINE Fukuoka ͷ؆୯ͳྺ࢙ͱɺͲͷ༷ʹ LINE ৽ػೳ։ൃΛߦ͍ͬͯΔ͔ • LINE ৽ػೳͷ։ൃϑϩʔͱΫϥΠΞϯτͷ։ൃϓϩηεʹ͍ͭͯ • αϒεΫϦϓγϣϯαʔϏε։ൃͰಘͨ஌ݟ • ՝୊ʹ͍ͭͯ

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஍ํϒϥϯνͰ͋Δ LINE Fukuoka ͷ ؆୯ͳྺ࢙ͱɺͲͷ༷ʹ LINE ৽ػೳ ։ൃΛߦ͍ͬͯΔ͔

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• 2009 - NHST Japanגࣜձࣾ ෱Ԭ ηϯλʔ ઃཱ • 2011 - NHN Service Technology Corp. ʹ঎߸มߋ

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• 2009 - NHST Japanגࣜձࣾ ෱Ԭ ηϯλʔ ઃཱ • 2011 - LINEגࣜձࣾͷ100ˋࢠձ ࣾͱͯ͠ɺLINE FukuokaΛઃཱɻ • 2011೥6݄23೔ LINE ϦϦʔε • 2013 - LINE Fukuoka ʹ঎߸มߋ • 2014 - ։ൃ૊৫্ཱ͕ͪΓ

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2014 • ࣾһ਺ 400 ऑ • ΤϯδχΞ਺ਓ • ։ൃؔ༩αʔϏε਺1~2

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ݱࡏ • ࣾһ਺ 1000 ௒ • ΤϯδχΞ 100ਓऑ • ։ൃؔ༩αʔϏε਺8

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2015~ Shop team

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SHOP part

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SHOP part • 2015 - αʔό։ൃ։࢝ • 2017 - ΫϥΠΞϯτ։ൃ։࢝

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SHOP part • Client νʔϜࠃ੶ • ೔ຊɾؖࠃɾதࠃɾ୆࿷ɾυΠπ • ίϛϡχέʔγϣϯݴޠ • ೔ຊޠɾӳޠ

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SHOP part 2017 - 4ਓ ↓ 2019 - 13ਓ

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SHOP part 2018 - LINE ֆจࣈ 2019 - ΧελϜελϯϓ - LINE ελϯϓ ϓϨϛΞϜ 2020 - ϝοηʔδελϯϓ

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LINE ৽ػೳͷ։ൃϑϩʔͱ ΫϥΠΞϯτͷ։ൃϓϩηεʹ͍ͭͯ

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LINE ৽ػೳͷ։ൃϑϩʔ

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LINE ελϯϓ ϓϨϛΞϜ

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Speciﬁcation Prototyping Discussion the spec between a Planner and an Engineer.

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Kick Off meeting Planner Engineer Data Scientist UIɾUX designer QA Project Manager

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Implementation range Chat room Product detail page Setting page

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Estimation - Planning Poker

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Estimation - Planning Poker

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Progress tracking JIRA Gantt chart

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Development process Schedule change Sprint Review

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QA phase Pre-QA   (Sanity check)  2 weeks Main-QA   2 weeks

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Release!

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ΫϥΠΞϯτͷ։ൃϓϩηεʹ͍ͭͯ

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KOREA/BUNDANG TAIWAN/TAIPEI TOKYO FUKUOKA

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Source Code Kotlin 55.2%  1,999,915 lines of code 194,298 commits Swift 69.6%  2,018,070 lines of code 175,416 commits ※ 5্݄०ݱࡏ iOS Android

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Branching strategy Master release/x.x.x Bugfix Merge Feature develop QA start Release AutoMerge by CI Guard with Feature flag if a big project

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Branching strategy Master release/x.x.x Bugfix Merge Feature develop QA start Release AutoMerge by CI Guard with Feature flag if a big project

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Branching strategy Master release/x.x.x Bugfix Merge Feature develop QA start Release Guard with Feature flag if a big project AutoMerge by CI

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Branching strategy Master Release Guard with Feature flag if a big project If we are using Feature branch…

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Branching strategy Master Release Guard with Feature flag if a big project If we are using Feature branch…

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Branching strategy Master Release Guard with Feature flag if a big project • Merge costs can be eliminated. • Release timing can be controllable more easily. • Shares the halfway features to the other developers. • Decreasing readability. Cons Pros

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Branching strategy https://speakerdeck.com/line_developers/ﬂag-based-feature- management https://github.com/line/feature-ﬂag-android

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Branching strategy Master release/x.x.x Bugfix AutoMerge by CI Merge Feature develop QA start Release Guard with Feature flag if a big project

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Branching strategy Master release/x.x.x Bugfix AutoMerge by CI Merge Feature develop QA start Release Guard with Feature flag if a big project

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Conﬂict notiﬁcation by LINE

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Conﬂict notiﬁcation by LINE

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Review by the code owners

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Branching strategy Master release/x.x.x Bugfix Merge Feature develop QA start Release AutoMerge by CI Guard with Feature flag if a big project

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Branching strategy Master release/x.x.x Bugfix Merge Feature develop QA start Release AutoMerge by CI 2 weeks 2 weeks Guard with Feature flag if a big project

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Release train Every 2 weeks

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αϒεΫϦϓγϣϯαʔϏε։ൃͰ ಘͨ஌ݟ

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Subscription service on multi platform iOS Android Web

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#1 UpdateDate, BillingDate

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#1 UpdateDate, BillingDate ɹiOS • 1 week • 1 month • 2 months • 3 months • 6 months • 1 year ɹAndroid • 1 week • 1 month • 3 months • 6 months • 1 year Subscription Period

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#1 UpdateDate, BillingDate ߋ৽ • 11/30 • 12/30 • 1/30 • 2/28 ߪೖ 11/30

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#1 UpdateDate, BillingDate ߋ৽ • 11/30 • 12/30 • 1/30 • 2/28 ੥ٻ • 12/1 • 12/31 • 1/31 • 3/1 ߪೖ 11/30

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#1 UpdateDate, BillingDate ߋ৽ • 11/30 • 12/30 • 1/30 • 2/28 ੥ٻ • 12/1 • 12/31 • 1/31 • 3/1 ߪೖ 11/30

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#1 UpdateDate, BillingDate ܾࡁର৅ظؒΛ໌ࣔ͢Δ

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#2 Different platform between paying and using iOS Android

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#2 Different platform between paying and using iOS Android

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#2 Different platform between paying and using

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#3 “Subscription Group” on iOS https://developer.apple.com/jp/app-store/subscriptions/

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#3 “Subscription Group” on iOS άϨʔυ෼͚͞Ε͍ͯͯɺ ॏෳߪೖͰ͖ͳ͍΋ͷ • ϓϨϛΞϜ • ϊʔϚϧ • ϥΠτ

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#3 “Subscription Group” on iOS άϨʔυ෼͚͞Ε͍ͯͯɺ ॏෳߪೖͰ͖ͳ͍΋ͷ • ϓϨϛΞϜ • ϊʔϚϧ • ϥΠτ ॏෳߪೖͰ͖Δ΋ͷ ʢ഑৴͞ΕΔ൪૊͕ҧ͏ͳͲʣ • νϟϯωϧ̍ • νϟϯωϧ̎ • νϟϯωϧ̏

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#3 “Subscription Group” on iOS άϨʔυ෼͚͞Ε͍ͯͯɺ ॏෳߪೖͰ͖ͳ͍΋ͷ • ϓϨϛΞϜ • ϊʔϚϧ • ϥΠτ ॏෳߪೖͰ͖Δ΋ͷ ʢ഑৴͞ΕΔ൪૊͕ҧ͏ͳͲʣ • νϟϯωϧ̍ • νϟϯωϧ̎ • νϟϯωϧ̏ Subscription Groups

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#3 “Subscription Group” on iOS άϨʔυ෼͚͞Ε͍ͯͯɺ ॏෳߪೖՄೳͰ͖ͳ͍΋ͷ • ϓϨϛΞϜ • ϊʔϚϧ • ϥΠτ Subscription Groups

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#3 “Subscription Group” on iOS άϨʔυ෼͚͞Ε͍ͯͯɺ ॏෳߪೖͰ͖ͳ͍΋ͷ • ϓϨϛΞϜ • ϊʔϚϧ • ϥΠτ Guideline 3.1.2 - Business - Payments - Subscriptions We noticed that the different subscription products of your auto-renewable subscriptions were created as separate in- app purchase products, rather than as different subscription products within the same subscription group. Subscription Groups

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#4 “Upgrade”, “Downgrade” and “Crossgrade” άϨʔυ෼͚͞Ε͍ͯͯɺॏ ෳߪೖͰ͖ͳ͍΋ͷ • ϓϨϛΞϜ • ϊʔϚϧ (1ϲ݄) • ϊʔϚϧ (1೥) • ϥΠτ Downgrade Upgrade Crossgrade

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#4 “Upgrade”, “Downgrade” and “Crossgrade” Android iOS https://developer.android.com/google/play/billing/billing_subscriptions#Allow-upgra https://developer.apple.com/jp/app-store/subscriptions/#ranking ద༻λΠϛϯά͕ݻఆ ʮൺྫ഑෼ϞʔυʯͷઃఆͰ αʔϏεଆ͕ద༻λΠϛϯάΛબ୒Մೳ

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՝୊ʹ͍ͭͯ

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૊৫ͷ՝୊ Planner Designer Engineer QA

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૊৫ͷ՝୊ Planner Designer Engineer QA λεΫϑΥʔε

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૊৫ͷ՝୊

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૊৫ͷ՝୊ https://speakerdeck.com/line_devday2019/project-management-and-agile-strategies-and-examples-of-enterprise-wide-organization

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DX (Developer Experience) ΧΠθϯ Over 10 min for clean build…

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DX (Developer Experience) ΧΠθϯ Modularization (separate by framework, library module)

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DX (Developer Experience) ΧΠθϯ https://speakerdeck.com/line_devday2019/growing-line-for-ios https://engineering.linecorp.com/ja/blog/lineapp-android-team/

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