High 意識 Android - Mercari Day

Presentation at #mercariday

Transcript

1. High ҙࣝ Android mootoh
2. FAQ
3. : ϝϧΧϦͬͯ΋͏
 ΞϓϦ׬੒ͯ͠Δ͠
 ΍Δ͜ͱͳ͍Μ͡Όͳ͍ͷ?
4. A: ·ͩ·ͩ·ͩ·ͩ ·ͩ·ͩ·ͩ·ͩ ͋Δ
5. 2016/02~ • νϟϨϯδ • Χϧνϟʔ • ະདྷ
7. Stats % git diff --shortstat `git log --pretty=%H --since 'last year' | tail -n 1` → 2,029 files changed, +385,707, -170,628 ▪▪▪▪ % git log --pretty=%H --since 'last year' | wc -l → 4,049 commits
8. Team of 4 in "# # "
9. Team of 4→7 in "#$ $ # "
10. ެ҆9՝
11. “զʑͷؒʹ͸ɺνʔϜϓϨʔͳͲͱ͍͏ ౎߹ͷΑ͍ݴ͍༁͸ଘࡏͤΜɻ ͋Δͱ͢Ε͹ελϯυϓϨʔ͔Βੜ͡Δɺ νʔϜϫʔΫ͚ͩͩɻ” — ߥרେี, 2002
12. ެ҆9՝Ϟσϧ • ߈֪ػಈୂ S.A.C • ཱࣗͨ͠ଟ༷ͳϝϯόʔ • ݸʑͷ؍఺͔ΒϓϩμΫτ/૊৫ͷվળΛ
 ࣮ફ͢Δ
13. FAQ
14. : ̓ਓ΋ΤϯδχΞ͍Ε͹ े෼Ͱ͠ΐ
15. A: ·ΔͰ଍Γͳ͍ • #, ", $ ͦΕͧΕʹ෼͔Ε͍ͯΔ • ϓϩδΣΫτ͋ͨΓ 1~2ਓ • ΋ͬͱ͍Ε͹΍ΕΔ͜ͱΛ૿΍ͤΔ
16. Challenges
18. ଠฏ༸Λ·͙ͨ Code Review " PR # Review " Revise # Review # LGTM " Revise " Merge ☀ ☀ ☀ ☀ PR ͷ଺ཹ͕࣌ؒ௕͘ͳΔ → ϦϦʔε஗
19. Solution A
20. 6:30am standup meeting • " ϝϯόʔ͕Έͳ༮ࣇ࣋ͪͩͬͨ
 → ڧ੍ૣى͖ • # ʹ༏͍͠ (ன) • Նͩͬͨ → ே໌Δ͍ͷͰૣى͖͠΍͍͢
 → ࢼ͠ʹ΍ͬͯΈΑ͏
21. ݁Ռ: • • Sync ͷճ਺͕૿͑ͨ͜ͱʹΑΓɺϨϏϡʔͷޮ཰ ্͕͕ͬͨ • • ࢠ͕6am ʹى͖ΔͷͰग़੮Ͱ͖ͳ͍ • ҙਤͷ֬ೝͳͲ͸Ͱ͖Δ͕ PR ϕʔεͳͷͰ async
22. Solution B https://screenhero.com
23. ScreenHero • ϦϞʔτϖΞϓϩ • protected void synchronized review { … } • ࣌ؒ͸߹ΘͤΔඞཁ͕͋Δ
24. ݁Ռ • ίϛϡχέʔγϣϯͷଳҬ͕޿͍ • ࢖͍෼͚ • ॏ͍ϨϏϡʔͷ࣌ʹ໾ཱͭ • PR Ͱ2-3౓΍ΓऔΓͯͯ͠Β͕͔ͪ͋ͳ͍ → ͭͳ͍Ͱνϟνϟͬͱղܾ
25. # " $ Or…
26. ๺ۃ Meeting • ཱྀ͍͍ͩͨඅ30~100ສ • ͍͍ͩͨ౳ڑ཭ • פ͍⛄️
27. ஌ݟ • ૣى͖͸Ωπ͍͕໾ʹཱͭ • ෳࡶ౓ʹԠͯ͡ίϛϡχέʔγϣϯͷଳҬΛม͑Δ • ͕࣌ࠩൃੜ͠ͳ͍Α͏ʹνʔϜΛ෼͚Δͷ΋ • ๺ۃΛఘΊͳ͍❄
28. Challenges
29. https://commons.wikimedia.org/wiki/File:Adobe_guadalupe_wine_barrel.jpg ख़੒
30. ख़੒ίʔυ • ϓϩμΫτ։ൃΛ࠷଎ͰલʹਐΊ͖ͯͨ • 3೥ख़੒ (౰࣌) • ݹΊͷςΫϊϩδ • (ಛʹ)৽͍͠ϝϯόʔʹͱͬͯมߋͮ͠Β͍
31. ݹΊͷςΫϊϩδ 34 • Networking: • HttpUrlConnection / Apache HttpClient
 with ൿ఻ͷϨγϐ • Async Operation: • Callback Interface / EventBus • Singletons • Giant Activities
32. →एฦΓ 5 • Networking: okhttp • Async Operation: RxJava • Singletons: Dagger2 • Giant Activities: MVVM
33. ϦϑΝΫλϦϯά͍͕ͨ͠… • Ҋ݅։ൃͰύπύπ • ϦϑΝΫλϦϯά͢Δ͜ͱͰσάϨ͢Δ͜ͱ ͕͋ͬͨ • QA ͔Βͷ৴པஷۚ㽊
34. ࡞ઓ⚽ • Ҋ݅ͷεέδϡʔϧʹ৫ΓࠐΉ • ϦϑΝΫλͨ͠ํ͕ૣ͍ূڌΛ஝ੵ͢Δ • ςετͰσάϨΛ๷ࢭ͠ɺ৴པΛஷΊΔ
35. ஌ݟ • ৽͍͠ػೳ࣮૷Λ͢ΔલʹϦϑΝΫλϦϯά • εέδϡʔϧʹ৫ΓࠐΉ • ͡Θ͡Θ޿͛Δ • ಆ͍ଓ͚ΔɺఘΊͳ͍
36. Challenges
37. # " 1 → 8 0 → 1 Product Phase
38. $ # " 0 → 1 8 → 10 1 → 8 Product Phase
39. Repository # " + $ • ONE OK REPOSITORY • flavor Ͱ෼͚͍ͯͨ
40. ໰୊ • มߋͮ͠Β͍ • isJP(), isUS(), isUK() • #޲͚ͷมߋΛ͍͚ͨͩ͠ͳͷʹ"ͷίʔυΛؾʹ͠ͳ͍ͱ͍͚ͳ͍ • ࣌ࠩ໰୊ (ઌड़) • QA େม • Өڹൣғ: #޲͚ͷมߋ͚ͩͲɺ΄Μͱʹ"͸յΕͯͳ͍? • Region ͝ͱͰ phase ͕ҟͳΔ • ༏ઌ౓΍։ൃελΠϧ΋ҟͳΔ
41. Solutions • ͻͱ·ͣ Branch Λ෼͚ͨ ⎇ • Fork ͨ͠Β໭Δͷ͸ࠔ೉ • ΋ͬͱ Region ͕૿͑ͨΒ?
42. Challenges
43. ID ج൫
44. ID ج൫ • Single Sign On తͳ΋ͷ • Mercari <-> Souzoh • iOS / Android ͷϥΠϒϥϦॻ͘͜ͱʹͳͬͨ
45. ݸਓతνϟϨϯδ • Kotlin • ຊମΞϓϦʹಋೖ͸᪳᪯ΘΕΔ͕ϥΠϒϥϦʹͳΒ • gRPC • HTTP/2, Protobuf, ΫϩεϓϥοτϑΥʔϜ
46. gRPC "# ໰୊ • #-"Ͱ gRPC ௨৴͢Δͱࢗ͞ΔσόΠε͕ • " Ͱ͸໰୊͕ൃੜ͠ͳ͍ • ϥΠϒϥϦͷԞਂ͍ͱ͜Ζʹ໰୊͕͋Γͦ͏ • ී௨ͷ௨৴͸໰୊͕ͳ͍ • ͔͕࣌ؒ͠͠ͳ͍⌛
47. gRPC-gateway ? • gRPC ͷαʔϏεʹ RESTful JSON API ͰΞΫ ηεͰ͖Δ • ී௨ͷ HTTPS ΞΫηε͸ͭͳ͕Δ • ໰୊ճආ
48. ஌ݟ • Kotlin • ϥΠϒϥϦɺςετͳͲ͔Β߈ΊΔ → μϝʔδগͳ͍ • ϨϏϡʔ͞ΕͮΒ͍ • gRPC • REST ͸ಀ͕͛ͩ໾ʹཱͭ • ίϯτϦϏϡʔγϣϯͰ͖Δ༨༟Λ࢒͓ͯ͘͠
49. Future
50. ·ͩ·ͩ·ͩ·ͩ·ͩ·ͩ͋Δ • ܻҧ͍ʹͨ͘͞Μͷ A/B ςετΛ
 ؆୯ʹճͤΔ࢓૊Έ • ଞ Region ্ཱͪ͛ • Inter-Region ചങ • 3D ग़඼ɺ VR γϣοϐϯά (ໝ૝)
51. Wrap Up
52. Wrap up • ·ͩ·ͩνϟϨϯδ͕͋Δ • ٕज़త & ϓϩμΫτత • ެ҆̕՝Ϟσϧ
53. “و༷ɺ͍͍࿹Λ͍ͯ͠Δͳɻ ࠓ͔Βࢲͷ෦ԼʹͳΕɻ” — ૲ಽૉࢠ, 2004
54. JOIN US