DevRelCon Tokyo 2017 https://tokyo-2017.devrel.net/ Comprehensive approach to delivering great developer products Ryohei Miyota / LINE Corpration While LINE is the most popular consumer messaging application in Japan, we are not as popular a developer product as we are as a consumer product. Although we always recognized the strategical importance of opening our platform, we have not opened our platform aggressively until recently as can be seen by the notable fact that we still do not have a developer relations team. Why? There were scalability issues unique to a company who rapidly grew by aggressively releasing consumer products. In this talk, we discuss challenges we faced in such areas as engineering itself and approaches to engineering, and describe our recent efforts to overcome these problems. Furthermore, we show our prospect of developer advocacy with platforms that have been closed but might open in the future.

1. RY O H E I N . M I Y O TA
L I N E C O R P.
C O M P R E H E N S I V E A P P R O A C H T O D E L I V E R I N G G R E A T
D E V E L O P E R P R O D U C T S

2. RY O H E I N . M I Y O TA
L I N E C O R P.
C O M P R E H E N S I V E A P P R O A C H T O D E L I V E R I N G G R E A T
D E V E L O P E R P R O D U C T S

3. RY O H E I N . M I Y O TA
L I N E C O R P.
C O M P R E H E N S I V E A P P R O A C H T O D E L I V E R I N G G R E A T
D E V E L O P E R P R O D U C T S

4. RY O H E I N . M I Y O TA
L I N E C O R P.
C O M P R E H E N S I V E A P P R O A C H T O D E L I V E R I N G G R E A T
D E V E L O P E R P R O D U C T S

5. • About me and us
• Our platform products
• Challenges and solution approach
• A bit about Developer Advocacy at LINE
M Y TA L K T O D AY…

6. A B O U T M E A N D U S

7. • I’m Ryohei N. Miyota
• Product Manager for Developer Products at LINE
• Backend core service, Web logins, User profiles,
native SDK, etc.
• Prior to LINE, Developer Advocate at Twitter
• LINE ID: josolennoso
• Twitter @josolennoso
A B O U T M E

8. What is LINE?

9. • Started 6 years ago.
• Dominant messaging app in Japan.
• Overseas Markets: Taiwan, Indonesia, Thailand, etc.
• Multiple development centers
• Not only messaging. Applications on top of LINE

10. • Started 6 years ago.
• Dominant messaging app in Japan.
• Overseas Markets: Taiwan, Indonesia, Thailand, etc.
• Multiple development centers
• Not only messaging. Applications on top of LINE

16. L I N E ’ S D E V E L O P E R P R O D U C T S

17. Login & Profile Messaging API

18. P U B L I C A P I S < < PA R T N E R A P I S
• Beacons
• Payment
• Point
• Extended Profile
• Social Graph API
• Sticker Bot API
• SDK for inside-LINE browser web
app
• Game SDK
• etc.

19. P U B L I C A P I S < < PA R T N E R A P I S
Most of APIs are parter APIs!!
• Beacons
• Payment
• Point
• Extended Profile
• Social Graph API
• Sticker Bot API
• SDK for inside-LINE browser web
app
• Game SDK
• etc.

21. 開発の優先度
• Consumer -> Business parter > Developer

22. 開発の優先度
• Consumer -> Business parter > Developer

23. 3 H U R D L E S T O O V E R C O M E
1. Scalability
2. Development Style
3. Developer Relations

24. 3 H U R D L E S T O O V E R C O M E
1. Scalability
2. Development Style
3. Developer Relations

25. P R I O R I T Y A S A C O N S U M E R P R O D U C T C O M PA N Y
Consumers → Business parters → Developers

26. P R I O R I T Y A S A C O N S U M E R P R O D U C T C O M PA N Y
Consumers → Business parters →→ Developers

28. H O W D O W E S C A L E ?
Huge Monolithic service→ Microservices
• "Armeria": RPC library
• "Verda": Private cloud on Openstack

29. M O N O L I T H I C A P I
S E R V I C E
A P I S E R V I C E 4
A P I S E R V I C E 2
A P I S E R V I C E 3
A P I G AT E WAY
A P I S E R V I C E 1
L O C A L
R E D I S
C A C H E
PA S T
• Hard coding
• Not fault tolerant

30. M O N O L I T H I C A P I
S E R V I C E
A P I S E R V I C E 4
A P I S E R V I C E 2
A P I S E R V I C E 3
A P I G AT E WAY
A P I S E R V I C E 1
L O C A L
R E D I S
C A C H E
PA S T
• Hard coding
• Not fault tolerant

31. A P I S E R V I C E 1
A U T H
S E R V I C E
A P I S E R V I C E 1
A P I G AT E WAY
L I N E
PAY P L AT F O R M
R E D I S C L U S T E R
A P I S E R V I C E 2
B O T
P L AT F O R M
A P I S E R V I C E
L O G I N
S E R V I C E
A P I S E R V I C E
T O - B E
• Easily configurable
• Falut tolerant

33. 3 H U R D L E S T O O V E R C O M E
1. Scalability
2. Development Style
3. Developer Relations

34. L I N E F O R I P H O N E
A P I D E V E L O P M E N T S T Y L E
F E AT U R E
A
C O M P O N E N T 5
C O M P O N E N T 4
C O M P O N E N T 3
C O M P O N E N T 1
C O M P O N E N T 2

35. L I N E F O R I P H O N E
F E AT U R E
A
C O M P O N E N T 5
C O M P O N E N T 4
C O M P O N E N T 3
C O M P O N E N T 1
A P I
FA M I LY A
C O M P O N E N T 2

36. L I N E F O R
I P H O N E
F E AT U R E
C O M P O N E N T
C O M P O N E N T
C O M P O N E N T
L I N E
PAY M E N T
F E AT U R E
C O M P O N E N T
C O M P O N E N T
C O M P O N E N T
F O O D
D E L I V E RY
F E AT U R E
C O M P O N E N T
C O M P O N E N T
C O M P O N E N T
U S E R
P R O F I L E S
F E AT U R E
C O M P O N E N T
C O M P O N E N T
C O M P O N E N T
PAY M E N T
S D K
C O M P O N E N T
C O M P O N E N T
P R O F I L E
A P I S
C O M P O N E N T
C O M P O N E N T
W E B A P P
S D K
C O M P O N E N T
C O M P O N E N T

37. R E S U LT: I N C O N S I S T E N T A P I B E H AV I O R
• Inconsistent functional granularity
• Inconsistent name & path conventions
• Mysterious magic numbers

38. R E S U LT: I N C O N S I S T E N T A P I B E H AV I O R
• Inconsistent functional granularity
• Inconsistent name & path conventions
• Mysterious magic numbers

39. T E A M S T R U C T U R E B E F O R E

40. … A N D A F T E R

41. … A N D A F T E R

42. 3 H U R D L E S T O O V E R C O M E
1. Scalability
2. Development Style
3. Developer Relations

43. LINE BOT AWARDS
• Top prize: JPY10M
• 815 bots from in/out of Japan

44. LINE BOT CARAVAN

45. O U R D E V E L O P E R R E L AT I O N S A S - I S
• No official, dedicated team
• Sometimes TL/PM speak at conferences
• No strategic approach

46. M A R K E T I N G T E A M O R E N G I N E E R I N G T E A M ?
Under Marketing Team
• Budget
• Business Partnership
• Synergy with core eng team?
Under Eng Team
• Implementation details
• Direct feedbacks to core eng
• Budget?

47. O U R D E V E L O P E R R E L AT I O N S T O - B E
• Dedicated team reporting to CTO
• Developer Advocates speak at conferences
• #Strategy

48. O U R D E V E L O P E R R E L AT I O N S T O - B E
• Dedicated team reporting to CTO
• Developer Advocates speak at conferences
• #Strategy
• We are hiring!

49. Bot API closed beta Bot API open
New documentetation
Beacon API open
Eng re-org DevAd position open New login features?
New bot APIs?
Developer portal?
New SDK?
New something?
PA S T & F U T U R E

50. T H A N K Y O U ! !